写真a

UTSUNOMIYA Hiroaki

Position

Professor

Research Field

Nuclear engineering, Particle/Nuclear/Cosmic ray/Astro physics

Graduating School 【 display / non-display

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    1976.03

    Kyoto University   Faculty of Science   Graduated

Graduate School 【 display / non-display

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    1981.03

    Kyoto University  Graduate School, Division of Natural Science  Doctor's Course  Completed

Campus Career 【 display / non-display

  • 2012.04
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    2013.03

    KONAN UNIVERSITYGraduate School of Natural Science (Masters Degree Program)   Graduate School of Natural Science Deprtment of Physics (Masters Degree Program)  

  • 2011.04
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    2012.03

    KONAN UNIVERSITYFaculty of Science and Engineering   Faculty of Science and Engineering Department of Physics  

  • 2005.04
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    2006.03

    KONAN UNIVERSITYGraduate School of Natural Science (Masters Degree Program)   Graduate School of Natural Science Deprtment of Physics (Masters Degree Program)  

  • 2004.04
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    2005.03

    KONAN UNIVERSITYFaculty of Science and Engineering   Faculty of Science and Engineering Department of Physics  

  • 2002.04
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    2004.03

    KONAN UNIVERSITYUniversity Office   Manager  

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External Career 【 display / non-display

  • 2012.04
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    2013.03

    University Tokyo   Center for Nuclear Science  

  • 1985.07
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    1990.12

    Cyclotron Institute, Texas A&M University  

  • 1982.10
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    1985.06

    Superconducting Cyclotron Laboratory, Michigan State University  

 

Published Papers 【 display / non-display

  • IAEA Photonuclear Data Library 2019

    T. Kawano, Y. S. Cho, P. Dimitriou, D. Filipescu, N. Iwamoto, V. Plujko, X. Tao, H. Utsunomiya, V. Varlamov, R. Xu, R. Capote, I. Gheorghe, O. Gorbachenko, Y.L. Jin, T. Renstrøm, M. Sin, K. Stopani, Y. Tian, G.M. Tveten, J.M. Wang, T. Belgya, R. Firestone, S. Goriely, J. Kopecky, M. Krtiˇcka, R. Schwengner, S. Siem, and M. Wiedeking

    Nuclear Data Sheets ( ELSEVIER )  163   109 - 162   2020.01  [Refereed]

    Joint Work

    Photo-induced reaction cross section data are of importance for a variety of current or emerging applications, such as radiation shielding design and radiation transport analyses, calculations
    of absorbed dose in the human body during radiotherapy, physics and technology of fission reactors (influence of photo-reactions on neutron balance) and fusion reactors (plasma diagnostics and
    shielding), activation analyses, safeguards and inspection technologies, nuclear waste transmutation,
    medical isotope production and astrophysical applications.
    To address these data needs the IAEA Photonuclear Data library was produced in 1999, containing
    evaluated photo-induced cross sections and neutron spectra for 164 nuclides which were deemed
    relevant for the applications.
    Since the release of the IAEA Photonuclear Data Library however, new experimental data as
    well as new methods to assess the reliability of experimental cross sections have become available.
    Theoretical models and input parameters used to evaluate photo-induced reactions have improved
    significantly over the years. In addition, new measurements of partial photoneutron cross sections
    using mono-energetic photon beams and advanced neutron detection systems have been performed
    allowing for the validation of the evaluations and assessments of the experimental data. Furthermore,
    technological advances have led to the construction of new and more powerful gamma-beam facilities,
    therefore new data needs are emerging.
    We report our coordinated efforts to address these data needs and present the results of the new
    up-to-date evaluations included in the new updated IAEA Photonuclear Data Library consisting of
    219 nuclides. The new library includes 188 new evaluations produced by the CRP evaluators, and
    one evaluation taken from the JENDL/PD-2016 library, while 20 evaluations were retained from the
    previous 1999 IAEA Photonuclear Data Library. In most of the cases, the photon energy goes up
    to 200 MeV. A total of 55 nuclides are new in this library reflecting the progress in measurements
    but also the developing data needs. In this paper we discuss the new assessment method and
    make recommendations to the user community in cases where the experimental data are discrepant and the assessments disagree. In addition, in the absence of experimental data, we present model
    predictions for photo-induced reaction cross section on nuclides of potential interest to medical
    radioisotope production.

    DOI

  • Reference database for photon strength functions

    S. Goriely, P. Dimitriou, M. Wiedeking, T. Belgya, R. Firestone, J. Kopecky, M. Krtiˇcka, V. Plujko, R. Schwengner, S. Siem, H. Utsunomiya, S. Hilaire, S. P´eru, Y.S. Cho, D.M. Filipescu, N. Iwamoto, T. Kawano, V. Varlamov, and R. Xu

    THE EUROPEAN PHYSICAL JOURNAL A   55   172   2019.10  [Refereed]

    Joint Work

    Photon strength functions describing the average response of the nucleus to an electromagnetic
    probe are key input information in the theoretical modelling of nuclear reactions. Consequently they
    are important for a wide range of fields such as nuclear structure, nuclear astrophysics, medical isotope
    production, fission and fusion reactor technologies. They are also sources of information for widely used
    reaction libraries such as the IAEA Reference Input Parameter Library and evaluated data files such as
    EGAF. In the past two decades, the amount of reaction gamma-ray data measured to determine photon
    strength functions has grown rapidly. Different experimental techniques have led to discrepant results
    and users are faced with the dilemma of which (if any) of the divergent data to adopt. We report on a
    coordinated effort to compile and assess the existing experimental data on photon strength functions from
    the giant dipole resonance region to energies below the neutron separation energy. The assessment of the
    discrepant data at energies around or below the neutron separation energy has been possible only in a
    few cases where adequate information on the model-dependent analysis and estimation of uncertainties
    was available. In the giant dipole resonance region, we adopt the recommendations of the new IAEA
    photonuclear data library. We also present global empirical and semi-microscopic models that describe
    the photon strength functions in the entire energy region and reproduce reasonably well most of the
    experimental data. The compiled experimental photon strengths and recommended model calculations are
    available from the PSF database hosted at the IAEA (www-nds.iaea.org/PSFdatabase).

    DOI

  • γ-ray strength function for thallium isotopes relevant to the 205Pb-205Tl chronometry

    H. Utsunomiya, T. Renstrøm, G. M. Tveten, S. Goriely, T. Ari-izumi, D. Filipescu, J. Kaur, Y.-W. Lui, W. Luo, S. Miyamoto, et al.

    PHYSICAL REVIEW C   99   024609-1 - 024609-8   2019.02  [Refereed]

    Joint Work

    Photoneutron cross sections were measured for 203Tl and 205Tl at energies between the one- and two-neutron thresholds using quasimonochromatic γ-ray beams produced in laser Compton scattering at the NewSUBARU synchrotron radiation facility. Our measurement results in cross sections significantly different from the previously reported bremsstrahlung experiment, leading to rather different giant dipole resonance (GDR) parameters, in particular to lower GDR peak energies and higher peak cross sections. The photoneutron data are used to constrain the γ-ray strength function on the basis of the Hartree-Fock-Bogolyubov plus quasiparticle random-phase approximation using the Gogny D1M interaction. Supplementing the experimentally constrained γ-ray strength function with the zero-limit E1 andM1 contributions for the de-excitation mode, we estimate the Maxwellian-averaged cross section for the s-process branching-point nucleus 204Tl in the context of the 205Pb-205Tl chronometry.

    DOI

  • Photoneutron cross sections for Ni isotopes: Toward understanding (n,γ) cross sections relevant to weak s-process nucleosynthesi

    H. Utsunomiya, T. Renstrøm, G. M. Tveten, S. Goriely, S. Katayama, T. Ari-izumi, D. Takenaka, D. Symochko, B. V. Kheswa, V. W. Ingeberg et al.

    PHYSICAL REVIEW C   98   054619-1 - 054619-9   2018.11  [Refereed]

    Joint Work

    Photoneutron cross sections were measured for 58Ni, 60Ni, 61Ni, and 64Ni at energies between the one-neutron and two-neutron thresholds using quasimonochromatic γ-ray beams produced in laser Compton scattering at the NewSUBARU synchrotron radiation facility. These photoneutron data are used to extract the γ-ray strength function above the neutron threshold, complementing the information obtained by the Oslo method below the threshold. We discuss radiative neutron-capture cross sections and the Maxwellian-averaged cross sections for Ni isotopes including 63Ni, a branching point nucleus along the weak s-process path. The cross sections are calculated with the experimentally constrained γ-ray strength functions from the Hartree-Fock-Bogolyubov plus quasiparticle–random-phase approximation based on the Gogny D1M interaction for both E1 andM1 components and supplemented with the M1 upbend.

    DOI

  • Response function and linearity for high energy γ-rays in large volume LaBr3:Ce detectors

    G. Gosta, N. Blasi, F. Camera, B. Million, A. Giz\az, O. Wieland, F.M. Rossi, H. Utsunomiya, T. Ari-izumi, D. Takenaka, D. Filipescu, I. Gheorghe

    Nucl. Inst. Meth. A   879   92 - 100   2018  [Refereed]

    Joint Work

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Books etc 【 display / non-display

  • TOURS SYMPOSIUM ON NUCLEAR PHYSICS V

    H. Utsunomiya, T. Wada, T. Yamagata (Part: Joint Work )

    AMERICAN INSTITUTE OF PHYSICS  2004.11

    国際会議プロシーデイングス編集
    単行本TOURS SYMPOSIUM ON NUCLEAR PHYSICS V
    編集者M. Arnould, M. Lewitowicz, G. Muenzenberg, H. Akimune, M. Ohta,
    H. Utsunomiya, T. Wada, T. Yamagata
    出版社 AMERICAN INSTITUTE OF PHYSICS
    (AIP Conference Proceedings 704, New York, 2004)

  • TOURS SYMPOSIUM ON NUCLEAR PHYSICS IV (共著)

    H. Utsunomiya, T. Wada, T. Yamagata (Part: Joint Work )

    AMERICAN INSTITUTE OF PHYSICS  2001.11

    国際会議プロシーデイングス
    単行本TOURS SYMPOSIUM ON NUCLEAR PHYSICS IV
    編集者M. Arnould, M. Lewitowicz, Yu.Ts. Oganessian, H. Akimune, M. Ohta,
    H. Utsunomiya, T. Wada, T. Yamagata
    出版社 AMERICAN INSTITUTE OF PHYSICS
    (AIP Conference Proceedings 561, New York, 2001)

Review Papers (Misc) 【 display / non-display

  • 3rd RCM on Updating the Photonuclear Data Library and Generating a Reference Database for Photon Strength Functions

    宇都宮弘章、岩本信之、河野俊彦

    核データニュース ( 日本原子力研究開発機構 )  122   2019.02

    Introduction and explanation (others)   Joint Work

    国際原子力機関の光核反応データプロジェクトの第3回プロジェクトミーティングに関する報告

  • The γ-Ray Beam-Line at NewSUBARU

    Hiroaki Utsunomiya, Satoshi Hashimoto, Shuji Miyamoto

    Nuclear Physics News ( European Science Foundation )  25 ( 3 ) 25 - 29   2015.07

    Introduction and explanation (others)   Joint Work

    ニュースバル放射光施設のガンマ線ビームラインに関する記事

  • gamma-ray strength function method and its application to Pd-107

    H. Utsunomiya, S. Goriely, H. Akimune, H. Harada, F. Kitatani, S. Goko, H. Toyokawa, K. Yamada, T. Kondo, O. Itoh, M. Kamata, T. Yamagata, Y. -W. Lui, I. Daoutidis, D. P. Arteaga, S. Hilaire, A. J. Koning

    PHYSICAL REVIEW C ( AMER PHYSICAL SOC )  82 ( 6 ) 064610   2010.12

    Joint Work

    The gamma-ray strength function method is devised to indirectly determine radiative neutron capture cross sections for radioactive nuclei. This method is applied here to the Pd-107 (T-1/2 = 6.5 x 10(6) yr) case. Photoneutron cross sections were measured for Pd-105,Pd-106,Pd-108 near neutron threshold with quasimonochromatic laser-Compton-scattering gamma-ray beams. These photoneutron cross sections as well as the reverse radiative neutron capture cross sections for Pd-104,Pd-105 are used to provide constraints on the Pd-107(n,gamma)Pd-108 cross section.

    DOI

  • Photoneutron cross sections for Zr-96: A systematic experimental study of photoneutron and radiative neutron capture cross sections for zirconium isotopes

    H. Utsunomiya, S. Goriely, H. Akimune, H. Harada, F. Kitatani, S. Goko, H. Toyokawa, K. Yamada, T. Kondo, O. Itoh, M. Kamata, T. Yamagata, Y. -W. Lui, S. Hilaire, A. J. Koning

    PHYSICAL REVIEW C ( AMER PHYSICAL SOC )  81 ( 3 ) 035801   2010.03

    Joint Work

    Photoneutron cross sections were measured for Zr-96 near neutron threshold with quasimonochromatic laser-Compton-scattering. gamma-ray beams. A systematic analysis of photoneutron and radiative neutron capture data for zirconium isotopes within the statistical model calculation leads to a unified picture of low-energy gamma-ray strengths for zirconium isotopes that is described by the HFB + QRPA model of E1 strength supplemented with an extra gamma strength attributed to a giant M1 resonance. Results of the systematic analysis including radiative neutron capture cross sections for radioactive Zr-95 and Zr-93 nuclei are presented.

    DOI CiNii

  • gamma-ray strength function for Sn-116,Sn-117 with the pygmy dipole resonance balanced in the photoneutron and neutron capture channels

    H. Utsunomiya, S. Goriely, M. Kamata, T. Kondo, O. Itoh, H. Akimune, T. Yamagata, H. Toyokawa, Y. -W. Lui, S. Hilaire, A. J. Koning

    PHYSICAL REVIEW C ( AMER PHYSICAL SOC )  80 ( 5 ) 055806   2009.11

    Joint Work

    Photoneutron cross sections were measured for Sn-117 and Sn-116 near the neutron thresholds at 6.94 and 9.56 MeV, respectively, with quasi-monochromatic laser-Compton scattering gamma rays. The Sn-117 cross section, which is strongly enhanced near the low threshold, provides evidence for the presence of extra gamma strength in the low-energy tail of the giant dipole resonance. A coherent analysis of the photoneutron data for Sn-117 together with the neutron capture on Sn-116 shows that the gamma-ray strength function is balanced in the photoneutron and neutron capture channels in terms of the microscopic Hartree-Fock-Bogoliubov plus quasiparticle random-phase approximation model of E1 strength combined with a pygmy E1 resonance at 8.5 MeV. The high-energy part of the pygmy resonance is also suggested in the photoneutron cross section for Sn-116.

    DOI CiNii

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Conference Activities & Talks 【 display / non-display

  • APPLICATION OF THE γSF METHOD TO PALLADIUM

    宇都宮 弘章

    FINUSTAR3(3rd international conference on "Frontiers In NUclear STructure, Astrophysics and Reactions)  2010  -  2010 

  • PHOTONEUTRON CROSS SECTIONS FOR Au

    宇都宮 弘章

    FINUSTAR3(3rd international conference on "Frontiers In NUclear STructure, Astrophysics and Reactions)  2010  -  2010 

  • STRIKING BEHAVIOR OF PHOTONEUTRON CROSS SECTIONS FOR 90Zr NEAR THRESHOLD

    宇都宮 弘章

    FINUSTAR3(3rd international conference on "Frontiers In NUclear STructure, Astrophysics and Reactions)  2010  -  2010 

  • The γSF (γ-ray strength function)method

    宇都宮 弘章

    FINUSTAR3(3rd international conference on "Frontiers In NUclear STructure, Astrophysics and Reactions)  2010  -  2010 

  • THE γSF METHOD - DETERMINATION OF RADIATIVE NEUTRON-CAPTURE CROSS SECTIONS FOR UNSTABLE NUCLEI

    宇都宮 弘章

    International Conference on Nuclear Data for Science and Technology 2010  2010  -  2010 

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Grant-in-Aid for Scientific Research 【 display / non-display

  • Grant-in-Aid for Scientific Research(B)

    Project Year: 2004.11  -  2006.11 

  • Grant-in-Aid for Exploratory Research

    Project Year: 2004.11  -  2005.11 

  • Grant-in-Aid for Scientific Research(C)

    Project Year: 2001.04  -  2003.03 

Joint and Contract research activities (Public) 【 display / non-display

  • Nuclear shapes and resonances, Japan-Norway collaboration on research and education

    International Joint Research  

    Project Year: 2019.01  -   

 

Qualification acquired 【 display / non-display

  • Chief Person of Radiation Handling (first and second kind)