Updated on 2024/11/16

写真b

 
IIMURA Shun
 
*Items subject to periodic update by Rikkyo University (The rest are reprinted from information registered on researchmap.)
Affiliation*
College of Science Department of Physics
Title*
Assistant Professor
Degree
Doctor of Philosophy in Science （ 3 2022   Osaka University ）
Campus Career*
  • 4 2022 - Present 
    College of Science   Department of Physics   Assistant Professor
 

Research Areas

  • Natural Science / Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics

Committee Memberships

  • 4 2024 - Present 
    Sendai workshop on “Low-Energy Electron Scattering for Nucleon and Exotic Nuclei”   Local Organizing Committee

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  • 3 2024 - Present 
    日本物理学会インフォーマルミーティング 停止・低速不安定核ビーム同好会   世話人

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  • 5 2023 - 4 2024 
    IReNA   IReNA Online Seminar Organizing Committee

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  • 9 2023 - 2 2024 
    SCRIT Collaboration Meeting 2024   Organizing Committee

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  • 4 2023 - 9 2023 
    第12回 停止・低速RIビームを用いた核分光研究会   現地世話人

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  • 11 2022 - 9 2023 
    The 1st IReNA-Ukakuren Joint Workshop   Organizing Committee

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Awards

  • 9 2023  
    RIBF Users Group Executive Committee  RIBF Users Group Thesis Awards 2023  Development of RF carpet type He gas cell and high-precision mass measurement of neutron-rich nuclei at around A=50−60 with MRTOF
     
    Shun IImura

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  • 12 2019  
    RIKEN Scientists' Assembly Steering Committee (RSASC)  The All-RIKEN Workshop 2019, Best Poster Award  Development of gas cell to stop and collect high energy RI beam, and extract radioactive ions with a high efficiency
     
    S. Iimura, A. Takamine, J. Liu, S. Chen, M. Rosenbusch, M. Wada, H. Ishiyama

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Papers

  • Spectroscopy of neutron-rich nuclei produced by multinucleon transfer reactions at KISS

    Yutaka Watanabe, Yoshikazu Hirayama, Momo Mukai, Toshitaka Niwase, Peter Schury, Marco Rosenbusch, Hironobu Ishiyama, Sun-Chan Jeong, Hiroari Miyatake, Michiharu Wada, Sota Kimura, Shun Iimura, Jun Young Moon, Takashi Hashimoto, Akihiro Taniguchi

    EPJ Web of Conferences306   01016 - 01016   18 10 2024

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    Publishing type：Research paper (scientific journal)   Publisher：EDP Sciences  

    Properties such as lifetimes and masses of neutron-rich nuclei are key parameters for elucidating the astrophysical rapid neutron capture process (r-process). Due to the lack of experimental nuclear data in the relevant extremely neutron-rich region, especially near and above N = 126, the predictions of theoretical nuclear models are crucial for simulating r-process nucleosynthesis. Experimental studies of the properties and structures of neutron-rich nuclei from near the β stability line up to the r-process path provide important inputs to these theoretical models, improving the accuracy of predictions for the nuclear properties involved in the rprocess. We are developing the KEK Isotope Separation System (KISS) at the RIKEN RIBF facility to produce and separate these nuclei to perform spectroscopy experiments. The nuclei of interest are produced by multinucleon transfer reactions, which have been recently attracting renewed interest as they provide a way to access neutron-rich nuclei that are difficult to produce by other methods such as complete fusion or fragmentation. We have performed nuclear and laser spectroscopy, lifetime and mass measurements of neutron-rich nuclei of refractory elements near the N = 126 region using <sup>198,nat</sup>Pt, <sup>nat</sup>Ta, <sup>nat</sup>W, and <sup>nat</sup>Ir targets irradiated with <sup>136</sup>Xe beams. We also extend our spectroscopic studies into the neutron-rich actinide region using <sup>238</sup>U beams. This paper introduces the KISS facility and provides an overview of the nuclear spectroscopy experiments carried out there. We also introduce the KISS-1.5 project, which was started in FY2024 to further extend the research into the neutron-rich region.

    DOI： 10.1051/epjconf/202430601016

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  • Mass measurements of neutron-rich <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>A</mml:mi><mml:mo>≈</mml:mo><mml:mn>90</mml:mn></mml:mrow></mml:math> nuclei constrain element abundances

    W. Xian, S. Chen, S. Nikas, M. Rosenbusch, M. Wada, H. Ishiyama, D. Hou, S. Iimura, S. Nishimura, P. Schury, A. Takamine, S. Yan, F. Browne, P. Doornenbal, F. Flavigny, Y. Hirayama, Y. Ito, S. Kimura, T. M. Kojima, J. Lee, J. Liu, H. Miyatake, S. Michimasa, J. Y. Moon, S. Naimi, T. Niwase, T. Sonoda, D. Suzuki, Y. X. Watanabe, V. Werner, K. Wimmer, H. Wollnik

    Physical Review C109 ( 3 )   18 3 2024

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    Publishing type：Research paper (scientific journal)   Publisher：American Physical Society (APS)  

    DOI： 10.1103/physrevc.109.035804

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    Other Link： http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevC.109.035804/fulltext

  • In-gas-cell laser ionization spectroscopy at KISS

    Yoshikazu Hirayama, Momo Mukai, Yutaka Watanabe, Peter Schury, Toshitaka Niwase, Hyunsuk Choi, Takashi Hashimoto, Shun Iimura, SunChan Jeong, Hiroari Miyatake, JunYoung Moon, Hitoshi Nakada, Michihiro Oyaizu, Marco Rosenbusch, Aiko Takamine, Minori Tajima, Akihiro Taniguchi, Michiharu Wada

    Interactions245 ( 1 )   13 3 2024

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    Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

    DOI： 10.1007/s10751-024-01886-1

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    Other Link： https://link.springer.com/article/10.1007/s10751-024-01886-1/fulltext.html

  • Helium gas cell with RF wire carpets for KEK Isotope Separation System

    Y. Hirayama, M. Mukai, P. Schury, Y.X. Watanabe, S. Iimura, H. Ishiyama, S.C. Jeong, H. Miyatake, T. Niwase, M. Rosenbusch, A. Takamine, A. Taniguchi, M. Wada

    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment1058   168838 - 168838   1 2024

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    Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/j.nima.2023.168838

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  • First direct mass measurement for neutron-rich <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Mo</mml:mi><mml:mprescripts /><mml:none /><mml:mn>112</mml:mn></mml:mmultiscripts></mml:math> with the new ZD-MRTOF mass spectrograph system

    D. S. Hou, A. Takamine, M. Rosenbusch, W. D. Xian, S. Iimura, S. D. Chen, M. Wada, H. Ishiyama, P. Schury, Z. M. Niu, H. Z. Liang, S. X. Yan, P. Doornenbal, Y. Hirayama, Y. Ito, S. Kimura, T. M. Kojima, W. Korten, J. Lee, J. J. Liu, Z. Liu, S. Michimasa, H. Miyatake, J. Y. Moon, S. Naimi, S. Nishimura, T. Niwase, T. Sonoda, D. Suzuki, Y. X. Watanabe, K. Wimmer, H. Wollnik

    Physical Review C108 ( 5 )   27 11 2023

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    Publishing type：Research paper (scientific journal)   Publisher：American Physical Society (APS)  

    DOI： 10.1103/physrevc.108.054312

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    Other Link： http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevC.108.054312/fulltext

  • The SCRIT electron scattering facility at RIKEN RI Beam Factory

    T. Ohnishi, D. Abe, Y. Abe, R. Danjyo, A. Enokizono, T. Goke, M. Hara, Y. Honda, T. Hori, S. Ichikawa, S. Iimura, Y. Ishikura, K. Ishizaki, Y. Ito, K. Kurita, C. Legris, Y. Maehara, Y. Nagano, R. Obara, R. Ogawara, T. Suda, T. Tamae, K. Tsukada, M. Wakasugi, M. Watanabe, H. Wauke, T. Yamano, S. Yoshida

    Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms541   380 - 384   8 2023

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    Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/j.nimb.2023.05.038

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  • Discovery of New Isotope <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">U</mml:mi></mml:mrow><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>241</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math> and Systematic High-Precision Atomic Mass Measurements of Neutron-Rich Pa-Pu Nuclei Produced via Multinucleon Transfer Reactions

    T. Niwase, Y. X. Watanabe, Y. Hirayama, M. Mukai, P. Schury, A. N. Andreyev, T. Hashimoto, S. Iimura, H. Ishiyama, Y. Ito, S. C. Jeong, D. Kaji, S. Kimura, H. Miyatake, K. Morimoto, J.-Y. Moon, M. Oyaizu, M. Rosenbusch, A. Taniguchi, M. Wada

    Physical Review Letters130 ( 13 )   31 3 2023

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    Publishing type：Research paper (scientific journal)   Publisher：American Physical Society (APS)  

    DOI： 10.1103/physrevlett.130.132502

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    Other Link： http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevLett.130.132502/fulltext

  • Development of a β-TOF detector: An enhancement of the α-TOF detector for use with β-decaying nuclides

    Toshitaka Niwase, Wenduo Xian, Michiharu Wada, Marco Rosenbusch, Sidong Chen, Aiko Takamine, Jiajian Liu, Shun Iimura, Dongsheng Hou, Shuxiong Yan, Hironobu Ishiyama, Hiroari Miyatake, Shunji Nishimura, Daiya Kaji, Kouji Morimoto, Yoshikazu Hirayama, Yutaka X Watanabe, Sota Kimura, Peter Schury, Hermann Wollnik

    Progress of Theoretical and Experimental Physics2023 ( 3 )   9 3 2023

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    Publishing type：Research paper (scientific journal)   Publisher：Oxford University Press (OUP)  

    Abstract

    Previously, we developed an α-TOF detector for correlated measurements of atomic masses and decay properties of radioactive isotopes using a multi-reflection time-of-flight mass spectrograph, and successfully demonstrated α-decay-correlated mass measurements of heavy and superheavy nuclides. In this work, we develop a β-TOF detector, an improvement upon the α-TOF detector, to extend this technology to β-decaying nuclides. Online commissioning with 81Ga yielded a measured half-life of 1.44(31) s, in agreement with the previous literature, and confirmed the efficiency of detecting a decay-correlated event to be consistent with the solid angle limitation.

    DOI： 10.1093/ptep/ptad039

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    Other Link： https://academic.oup.com/ptep/article-pdf/2023/3/031H01/49714780/ptad039.pdf

  • Study of the N = 32 and N = 34 Shell Gap for Ti and V by the First High-Precision Multireflection Time-of-Flight Mass Measurements at BigRIPS-SLOWRI Peer-reviewed

    S. Iimura, M. Rosenbusch, A. Takamine, Y. Tsunoda, M. Wada, S. Chen, D. S. Hou, W. Xian, H. Ishiyama, S. Yan, P. Schury, H. Crawford, P. Doornenbal, Y. Hirayama, Y. Ito, S. Kimura, T. Koiwai, T. M. Kojima, H. Koura, J. Lee, J. Liu, S. Michimasa, H. Miyatake, J. Y. Moon, S. Naimi, S. Nishimura, T. Niwase, A. Odahara, T. Otsuka, S. Paschalis, M. Petri, N. Shimizu, T. Sonoda, D. Suzuki, Y. X. Watanabe, K. Wimmer, H. Wollnik

    Physical Review Letters130 ( 1 )   5 1 2023

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    Publishing type：Research paper (scientific journal)   Publisher：American Physical Society (APS)  

    DOI： 10.1103/physrevlett.130.012501

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    Other Link： http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevLett.130.012501/fulltext

  • The new MRTOF mass spectrograph following the ZeroDegree spectrometer at RIKEN’s RIBF facility Peer-reviewed

    M. Rosenbusch, M. Wada, S. Chen, A. Takamine, S. Iimura, D. Hou, W. Xian, S. Yan, P. Schury, Y. Hirayama, Y. Ito, H. Ishiyama, S. Kimura, T. Kojima, J. Lee, J. Liu, S. Michimasa, H. Miyatake, J.Y. Moon, M. Mukai, S. Nishimura, S. Naimi, T. Niwase, T. Sonoda, Y.X. Watanabe, H. Wollnik

    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment1047   167824 - 167824   11 2022

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    Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/j.nima.2022.167824

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  • In-gas-cell laser resonance ionization spectroscopy of 200, 201 Pt Peer-reviewed

    Y. Hirayama, M. Mukai, Y. X. Watanabe, P. Schury, H. Nakada, J. Y. Moon, T. Hashimoto, S. Iimura, S. C. Jeong, M. Rosenbusch, M. Oyaizu, T. Niwase, M. Tajima, A. Taniguchi, M. Wada, H. Miyatake

    Physical Review C106 ( 3 )   30 9 2022

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    Publishing type：Research paper (scientific journal)   Publisher：American Physical Society (APS)  

    DOI： 10.1103/physrevc.106.034326

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    Other Link： http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevC.106.034326/fulltext

  • Various nuclear structures in Xe 140 studied by β decay of ground and isomeric states in i 140 Peer-reviewed

    A. Yagi, A. Odahara, H. Nishibata, R. Lozeva, C. B. Moon, S. Nishimura, K. Yoshida, N. Yoshinaga, C. Watanabe, K. Higashiyama, T. Shimoda, R. Daido, Y. Fang, P. S. Lee, B. Moon, P. Doornenbal, G. Lorusso, P. A. Söderström, T. Sumikama, H. Watanabe, T. Isobe, H. Baba, H. Sakurai, F. Browne, Z. Patel, S. Rice, L. Sinclair, J. Wu, Z. Y. Xu, R. Yokoyama, T. Kubo, N. Inabe, H. Suzuki, N. Fukuda, D. Kameda, H. Takeda, D. S. Ahn, Y. Shimizu, D. Murai, F. L. Bello Garrote, J. M. Daugas, F. Didierjean, E. Ideguchi, S. Iimura, T. Ishigaki, H. S. Jung, T. Komatsubara, Y. K. Kwon, C. S. Lee, S. Morimoto, M. Niikura, I. Nishizuka, K. Tshoo

    Physical Review C105 ( 4 )   4 2022

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    Structure of the neutron-rich N=86 isotope 140Xe, located northeast of a doubly-magic nucleus 132Sn, is investigated by β-γ spectroscopy. Two β-decay isomers in I140 are newly found in the study of two different β decays of I140 which were produced by two reactions (i) direct in-flight fission at a primary target and (ii) β decay of Te140 at an active stopper. Half-lives of the β decays of the ground state, the low-spin isomer, and the high-spin isomer are determined to be 0.38(2), 0.91(5), and 0.47(4) s, respectively. Decay schemes of the β decay of the high-spin isomer and of the mixed β decays of the ground state and the low-spin isomer in I140 to Xe140 are constructed using the information on γ-ray coincidence relation and γ-ray intensity. Nuclear structures of the low-lying states in Xe140 and I140 are discussed by comparing the experimental results to two theoretical calculations based on a large-scale shell model and the deformed Skyrme Hartree-Fock-Bogoliubov plus deformed quasiparticle-random-phase approximation. Possible candidates for (quasi-)γ-band members of 2+ and 4+ states and the octupole collective 1-state are proposed in Xe140. Increase of quadrupole, triaxial, and octupole collectivities is discussed with the increase of neutron and proton numbers.

    DOI： 10.1103/PhysRevC.105.044325

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  • α-decay-correlated mass measurement of ^(206,207g,m)Ra using an α-TOF detector equipped multireflection time-of-flight mass spectrograph system Peer-reviewed

    T. Niwase, M. Wada, P. Schury, P. Brionnet, S. D. Chen, T. Hashimoto, H. Haba, Y. Hirayama, D. S. Hou, S. Iimura, H. Ishiyama, S. Ishizawa, Y. Ito, D. Kaji, S. Kimura, J. Liu, H. Miyatake, J. Y. Moon, K. Morimoto, K. Morita, D. Nagae, M. Rosenbusch, A. Takamine, T. Tanaka, Y. X. Watanabe, H. Wollnik, W. Xian, S. X. Yan

    Physical Review C104 ( 4 )   20 10 2021

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    Publishing type：Research paper (scientific journal)   Publisher：American Physical Society (APS)  

    DOI： 10.1103/physrevc.104.044617

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    Other Link： http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevC.104.044617/fulltext

  • First high-precision direct determination of the atomic mass of a superheavy nuclide Peer-reviewed

    P. Schury, T. Niwase, M. Wada, P. Brionnet, S. Chen, T. Hashimoto, H. Haba, Y. Hirayama, D. S. Hou, S. Iimura, H. Ishiyama, S. Ishizawa, Y. Ito, D. Kaji, S. Kimura, H. Koura, J. J. Liu, H. Miyatake, J.-Y. Moon, K. Morimoto, K. Morita, D. Nagae, M. Rosenbusch, A. Takamine, Y. X. Watanabe, H. Wollnik, W. Xian, S. X. Yan

    Physical Review C104 ( 2 )   31 8 2021

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    Publishing type：Research paper (scientific journal)   Publisher：American Physical Society (APS)  

    DOI： 10.1103/physrevc.104.l021304

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    Other Link： http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevC.104.L021304/fulltext

  • Three-dimensional tracking multi-segmented proportional gas counter for β-decay spectroscopy of unstable nuclei Peer-reviewed

    Y. Hirayama, P. Schury, M. Mukai, H. Choi, S. Iimura, Y.X. Watanabe, M. Wada, H. Watanabe, H. Miyatake

    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment997   165152 - 165152   5 2021

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    Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/j.nima.2021.165152

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  • Accurately accounting for effects on times-of-flight caused by finite field-transition times during the ejection of ions from a storage trap: A study for single-reference TOF and MRTOF mass spectrometry Peer-reviewed

    M. Rosenbusch, P. Schury, M. Wada, S. Iimura, Y. Ito, H. Wollnik

    International Journal of Mass Spectrometry456   116346 - 116346   10 2020

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    In applied forms of time-of-flight mass spectrometry utilizing ion storage devices prior to an analysis device, a non instantaneous electric ejection pulse applied in the region of ion storage is used to accelerate ions into the time-of-flight analyzer. The calculated mass value of the ions from the time-of flight is dependent on the duration of the field transition up to full strength. For novel applications dedicated to precision measurements, such as multi-reflection time-of-flight mass spectrometry of short-lived isotopes, the goal is to continuously decrease the measurement uncertainty while providing a mass accuracy on the same order. Even though dynamic-field models for time-of-flight mass spectrometry have been considered in the past for technological advances, it is important to study the accuracy of the measured mass in this context. Using a simplified linear model for the field transition, we provide a basic investigation of the scenario, and discuss the deviation from the classical "mass-overcharge" dependency of the ions' time-of-flight, which becomes violated. The emerging mass discrepancy depends on the distance between the mass of the ion used for calibration and that of the ion of interest and, in extreme cases, can increase to about one percent for systems with short times-of-flight. However, for typical conditions in single-reference multi-reflection time-of-flight mass spectrometry, mass deviations caused by this effect typically remain below the 1 ppm level. If a mass calibration using two or more ion species is possible during the measurement, the effect becomes negligible for appropriate choices of reference masses. (c) 2020 Published by Elsevier B.V.

    DOI： 10.1016/j.ijms.2020.116346

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  • Conceptual study on parasitic low-energy RI beam production with in-flight separator BigRIPS and the first stopping examination for high-energy RI beams in the parasitic gas cell Peer-reviewed

    T Sonoda, I Katayama, M Wada, H Iimura, V Sonnenschein, S Iimura, A Takamine, M Rosenbusch, T M Kojima, D S Ahn, N Fukuda, T Kubo, S Nishimura, Y Shimizu, H Suzuki, H Takeda, M Tanigaki, H Tomita, K Yoshida, H Ishiyama

    Progress of Theoretical and Experimental Physics2019 ( 11 )   1 11 2019

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    Publishing type：Research paper (scientific journal)   Publisher：Oxford University Press (OUP)  

    Abstract

    An in-flight separator performs the important role of separating a single specific radioactive isotope (RI) beam from the thousands of RI beams produced by in-flight fission as well as projectile fragmentation. However, when looking at ``separation'' from a different viewpoint, more than 99% of simultaneously produced RI beams are just eliminated in the focal plane slits or elsewhere in the separator. In order to enhance the effective usability of the RIKEN in-flight separator BigRIPS, we have been developing an innovative method: parasitic laser ion source (PALIS), which implements parasitic low-energy RI beam production by saving eliminated RI beams during BigRIPS experiments. In this paper, we present the expected benefits and feasibility for the PALIS concept and the results of the first stopping examination for high-energy RI beams in the gas cell.

    DOI： 10.1093/ptep/ptz120

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Misc.

  • Analysis of angular correlation of γ rays in <sup>142</sup>Xe with Geant4 simulation

    宮原里菜, 石谷壮史, 小田原厚子, 井手口栄治, NOR Nurhafiza M., KHANDELWAL M., 川畑貴裕, 古野達也, 青井考, ONG H.J., ONG H.J., 下田正, 西畑洸希, 飯村俊

    日本物理学会講演概要集(CD-ROM)78 ( 1 )   2023

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  • Construction of Level Structure of <sup>132</sup>Xe by γ-ray spectroscopy

    石谷壮史, 宮原里菜, 小田原厚子, 井手口栄治, NOR Nurhafiza M., KHANDELWAL M., 川畑貴裕, 古野達也, 青井考, ONG H.J., ONG H.J., 下田正, 西畑洸希, 飯村俊

    日本物理学会講演概要集(CD-ROM)78 ( 1 )   2023

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  • Systematic study for nuclear structure of neutron-rich nuclei of Sc, Ti, and V region using ZD-MRTOF system at SLOWRI/BigRIPS

    飯村俊, ROSENBUSCH M., 高峰愛子, 和田道治, CHEN S., HOU D., LIU J., XIAN W., YAN S., SCHURY P., 木村創大, 庭瀬暁隆, 庭瀬暁隆, 伊藤由太, 園田哲, 小島隆夫, 渡辺裕, 平山賀一, 宮武宇也, NAIMI S., 道正新一郎, 西村俊二, 小田原厚子, 石山博恒, 角田佑介, 清水則孝, 大塚孝治, 大塚孝治, 大塚孝治

    日本物理学会講演概要集(CD-ROM)77 ( 2 )   2022

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  • Direct mass measurement of superheavy nuclides <sup>257,258</sup>Db via MRTOF-MS equipped with the α-TOF detector.

    庭瀬暁隆, SCHURY P., 和田道治, BRIONNET P., CHEN S., 羽場宏光, 平山賀一, HOU D. S., HOU D. S., HOU D. S., 飯村俊, 飯村俊, 飯村俊, 石山博恒, 伊藤由太, 加治大哉, 木村創大, 小浦寛之, 宮武宇也, 森本幸司, 森田浩介, 森田浩介, 森田浩介, 長江大輔, ROSENBUSCH M., 高峰愛子, 渡辺裕, WOLLNIK H., XIAN W., XIAN W., YAN S. X.

    日本物理学会講演概要集(CD-ROM)77 ( 1 )   2022

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  • Status of the mass measurement of neutron-rich nuclei at A ～ 50–60 using SLOWRI/ZD-MRTOF Peer-reviewed

    S. Iimura, M. Rosenbusch, A. Takamine, D. S. Hou, M. Wada, S. Chen, J. Liu, W. Xian, S. Yan, P. Schury, S. Kimura, T. Niwase, Y. Ito, T. Sonoda, T. M. Kojima, Y. X. Watanabe, S. Naimi, S. Michimasa, S. Nishimura, A. Odahara, H. Ishiyama

    RIKEN Accelerator Progress Report 2021 Vol. 55   2022

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  • Development of new beta-delayed neutron detector to study nuclear structure of neutron-rich nuclei

    吉岡篤志, 小田原厚子, 飯村俊, 大上能弘, 前島大樹, NOR Nurhafiza M.

    日本物理学会講演概要集(CD-ROM)76 ( 1 )   2021

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  • Development of RF Carpet Type Gas Cell in SLOWRI for BigRIPS Beam-On-line Commissioning and Mass Measurement using MRTOF-

    飯村俊, 飯村俊, 高峰愛子, ROSENBUSCH M., 和田道治, CHEN S., HOU D., LIU J., XIAN W., YAN S., SCHURY P., 木村創大, 庭瀬暁隆, 伊藤由太, 園田哲, 小島隆夫, 渡辺裕, NAIMI S., 道正新一郎, 西村俊二, 小田原厚子, 石山博恒

    日本物理学会講演概要集(CD-ROM)76 ( 1 )   2021

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  • Online extraction efficiency from RF ion guide gas cell at SLOWRI Peer-reviewed

    S. Iimura, A. Takamine, D. S. Hou, M. Rosenbusch, M. Wada, S. Chen, J. Liu, W. Xian, S. Yan, P. Schury, S. Kimura, T. Niwase, Y. Ito, T. Sonoda, T. M. Kojima, Y. X. Watanabe, S. Naimi, S. Michimasa, S. Nishimura, A. Odahara, H. Ishiyama

    RIKEN Accelerator Progress Report 2020 Vol. 54   2021

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  • Development of RF Carpet Type Gas Cell in SLOWRI for BigRIPS Beam

    S. Iimura, A. Takamine, M. Rosenbusch, M. Wada, S. Chen, J. Liu, P. Schury, T. Sonoda, T. M. Kojima, Y. X. Watanabe, A. Odahara, H. Ishiyama

    Proceedings of the Specialists' Meeting on "Nuclear Spectroscopy and Condensed Matter Physics Using Short-Lived Nuclei Ⅵ" and Meeting on "11th Nuclear Spectroscopy Research Using Stop and Slow Unstable Nuclei (SSRI)"   6 2020

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  • Second report on offline tests for RF carpet transportation in RF ion guide gas cell at the SLOWRI facility Peer-reviewed

    S. Iimura, A. Takamine, M. Rosenbusch, M. Wada, S. Chen, J. Liu, P. Schury, T. Sonoda, T. M. Kojima, Y. X. Watanabe, A. Odahara, H. Ishiyama

    RIKEN Accelerator Progress Report 2019 Vol. 53   2020

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  • Study of neutron unbound states in 18O by β-delayed neutron decay of 18N Peer-reviewed

    H. Umehara, S. Iimura, S. Kanaya, T. Hara, M. Kinoshita, R. Nakajima, R. Shudo, R. Wakabayashi, M. Fukutome, M. Hisamatsu, H. Nishibata, T. Shimoda, A. Odahara

    RCNP Annual Report 2018   4 2019

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  • Precision half-life measurement of 18N

    S.Iimura, M. Fukutome, M. Hisamatsu, H. Umehara, S. Kanaya, H. Nishibata, A. Odahara, T. Shimoda, T. Hara, M. Kinoshita, R. Nakajima, R. Shudo, R. Wakabayashi

    Bulletin of the American Physical Society63 ( 12 )   10 2018

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Presentations

  • Insights and Prospects in Shell Evolution with MR-TOF Mass Spectrometry Invited

    Shun Iimura

    The Physical Society of Japan 2024 Spring Meeting  21 3 2024 

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    Event date： 18 3 2024 - 21 3 2024

    Presentation type：Oral presentation (invited, special)  

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  • SCRIT-ERISビームの高純度化に向けて〜Isobar分離装置の開発〜

    飯村俊

    SCRIT Collaboration Meeting 2024  23 2 2024 

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    Event date： 23 2 2024 - 23 2 2024

    Presentation type：Poster presentation  

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  • Investigating Shell Structure: Mass Measurements of Sc, Ti, and V Isotopes at new magic N = 32 and N = 34

    Shun Iimura

    2023 Fall Meeting APS DNP and JPS  29 11 2023 

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    Event date： 26 11 2023 - 1 12 2023

    Presentation type：Oral presentation (general)  

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  • Development of RF carpet type He gas cell and high-precision mass measurement of neutron-rich nuclei at around A=50−60 with MRTOF Invited

    Shun Iimura

    RIBF Users Meeting 2023  6 9 2023 

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    Event date： 6 9 2023 - 7 9 2023

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  • SCRITにおけるISOLビームの同重体分離に向けて

    飯村俊

    第１２回停止・低速RIビームを用いた核分光研究会（12th SSRI）  5 9 2023 

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    Event date： 4 9 2023 - 5 9 2023

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  • Exploring Shell Structure at N=32, 34: Mass Measurements of Sc, Ti, and V Isotopes

    Shun IImura

    The 1st IReNA-Ukakuren Joint Workshop “Advancing Professional Development in Nuclear Astrophysics and Beyond”  28 8 2023 

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    Event date： 28 8 2023 - 1 9 2023

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  • A new study of N = 34 subshell structure probed by high-precision mass measurements Invited

    Shun Iimura

    JSPS/NSFC/NRF A3 Foresight Program Annual Meeting 2022 "Nuclear Physics in the 21st Century"  14 2 2023 

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    Event date： 13 2 2023 - 15 2 2023

    Presentation type：Oral presentation (invited, special)  

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  • A new study of the N=32 and N=34 shell gap for Ti and V by the first high-precision MRTOF mass measurements at BigRIPS-SLOWRI Invited

    S. Iimura

    RIBF Users Meeting 2022  9 2022 

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    Presentation type：Oral presentation (invited, special)  

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  • 理研BigRIPS SLOWRIにおけるZD-MRTOF装置を用いた中性子過剰Sc, Ti, V核の系統的核構造研究

    飯村俊, M.Rosenbusch, 高峰愛子, 和田道治, S. Chen, D. Hou, J. Liu, W. Xian, S. Yan, P. Schury, 木村創大, 庭瀬暁隆, 伊藤由太, 園田哲, 小島隆夫, 渡辺裕, 平山賀一, 宮武宇也, S. Naimi, 道正新一郎, 西村俊二, 小田原厚子, 石山博恒, 角田佑介, 清水則孝, 大塚孝治

    日本物理学会2022年秋季大会  9 2022 

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    Presentation type：Oral presentation (general)  

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  • Mass measurement of neutron-rich nuclei of Sc, Ti, and V region using the new ZD-MRTOF system

    S. Iimura, M. Rosenbusch, A. Takamine, M. Wada, S. Chen, D. Hou, J. Liu, W. Xian, S. Yan, P. Schury, S. Kimura, T. Niwase, H. Koura, Y. Ito, T. Sonoda, T. M. Kojima, Y. X. Watanabe, Y. Hirayama, H. Miyatake, S. Naimi, S. Michimasa, S. Nishimura, A. Odahara, H. Ishiyama

    The 16th International Symposium on Nuclei in the Cosmos  9 2021 

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    Presentation type：Poster presentation  

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  • Mass measurement of neutron-rich nuclei of Sc, Ti, and V region using the new ZD-MRTOF system

    S. Iimura, M. Rosenbusch, A. Takamine, M. Wada, S. Chen, D. Hou, J. Liu, W. Xian, S. Yan, P. Schury, S. Kimura, T. Niwase, H. Koura, Y. Ito, T. Sonoda, T. M. Kojima, Y. X. Watanabe, Y. Hirayama, H. Miyatake, S. Naimi, S. Michimasa, S. Nishimura, A. Odahara, H. Ishiyama

    日本物理学会2021年秋季大会  9 2021 

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    Language：English   Presentation type：Oral presentation (general)  

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  • 理研 BigRIPS SLOWRI におけるRFカーペットガスセルの開発 ―オンライン実験と質量測定―

    飯村俊, 高峰愛子, M. Rosenbusch, 和田道治, S. Chen, D. Hou, J. Liu, W. Xian, S. Yan, P. Schury, 木村創大, 庭瀬暁隆, 伊藤由太, 園田哲, 小島隆夫, 渡辺裕, S, Naimi, 道正新一郎, 西村俊二, 小田原厚子, 石山博恒

    第76回日本物理学会年次大会  3 2021 

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    Presentation type：Oral presentation (general)  

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  • 理研 BigRIPS SLOWRIにおけるRFカーペットガスセルの開発

    飯村俊, 高峰愛子, M. Rosenbusch, 和田道治, S. Chen, J. Liu, W. Xian, D. Hou, S. Yan, P. Schury, 園田哲, 小島隆夫, 渡辺裕, 小田原厚子, 石山博恒

    日本物理学会2020年秋季大会  9 2020 

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    Presentation type：Oral presentation (general)  

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  • 理研BigRIPS SLOWRIにおけるRFカーペットガスセルの開発

    飯村俊, 高峰愛子, M. Rosenbusch, 和田道治, S. Chen, J. Liu, P. Schury, 園田哲, 小島隆夫, 渡辺裕, 小田原厚子, 石山博恒

    令和元年度KUR専門研究会「短寿命RIを用いた核分光と核物性研究Ⅵ」兼「第11回停止・低速RIビームを用いた核分光研究会」  1 2020 

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    Presentation type：Oral presentation (general)  

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  • Development of gas cell to stop and collect high energy RI beam, and extract radioactive ions with a high efficiency

    S. Iimura, A. Takamine, J. Liu, S. Chen, M. Rosenbusch, M. Wada, H. Ishiyama

    The ALL-RIKEN Workshop 2019  12 2019 

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    Presentation type：Poster presentation  

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  • High Precision Half-life Measurement of 18N

    S. Iimura, M. Fukutome, M. Hisamatsu, H. Umehara, S. Kanaya, H. Nishibata, A. Odahara, T. Shimoda, T. Hara, M. Kinoshita, R. Nakajima, R. Shudo, R. Wakabayashi

    5th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan  10 2018 

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    Presentation type：Oral presentation (general)  

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  • Efficiency of EURICA for low-energy gamma-ray by using Geant4

    S. Iimura, A. Odahara, A. Yagi, P. Lee, the EURICA collaboration

    The 16th CNS International Summer School  8 2017 

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    Presentation type：Poster presentation  

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  • Inertia Experiment Device & Huge Scaled Dynamics Carts

    S. Iimura, Y. Gomi, Y. Kawamura

    2016 International Conference of East-Asian Association for Science Education  8 2016 

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    Presentation type：Other  

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Teaching Experience

  • 4 2024 - Present 
    Introductory Seminar on Basic Physics （ Rikkyo University ）

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  • 4 2023 - Present 
    卒業研究２ （ 立教大学 ）

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  • 4 2023 - Present 
    卒業研究１ （ 立教大学 ）

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  • 4 2022 - Present 
    Physics 1 （ Rikkyo University ）

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  • 4 2022 - Present 
    Experiments in Physics 1 （ Rikkyo University ）

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  • 4 2022 - 3 2024 
    Experiments in Physics for Life Science Students （ Rikkyo University ）

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Research Projects

  • 二重魔法数132Sn核の電荷密度分布測定に向けた大強度ビーム用MRTOF同重体分離器の開発

    日本学術振興会  科学研究費助成事業 

    飯村 俊

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    4 2023 - 3 2028

    Grant number：23K13129

    Grant amount：\4680000 （ Direct Cost: \3600000 、 Indirect Cost：\1080000 ）

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  • スピンを偏極させた不安定核ビームによる新奇な原子核構造の核心的理解

    日本学術振興会  科学研究費助成事業 国際共同研究加速基金(国際共同研究強化(B)) 

    小田原 厚子, 西畑 洸希, 畠山 温, 平山 賀一, 飯村 俊

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    10 2022 - 3 2026

    Grant number：22KK0041

    Grant amount：\20020000 （ Direct Cost: \15400000 、 Indirect Cost：\4620000 ）

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