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河野 俊彦*; Cho, Y. S.*; Dimitriou, P.*; Filipescu, D.*; 岩本 信之; Plujko, V.*; Tao, X.*; 宇都宮 弘章*; Varlamov, V.*; Xu, R.*; et al.
Nuclear Data Sheets, 163, p.109 - 162, 2020/01
被引用回数：80 パーセンタイル：99.62(Physics, Nuclear)We report our coordinated efforts to address these data needs such as radiation shielding design and radiation transport analyses, and present the results of the new evaluations of more than 200 nuclides included in the new updated IAEA Photonuclear Data Library, where the photon energy goes up to 200 MeV. 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 photon-induced reaction cross section on nuclides of potential interest to medical radioisotope production.
Goriely, S.*; Dimitriou, P.*; Wiedeking, M.*; Belgya, T.*; Firestone, R.*; Kopecky, J.*; Krti
ka, M.*; Plujko, V.*; Schwengner, R.*; Siem, S.*; et al.
European Physical Journal A, 55(10), p.172_1 - 172_52, 2019/10
被引用回数：64 パーセンタイル：92.18(Physics, Nuclear)We report on a coordinated and systematic effort to compile and assess all the existing experimental data on photon strength functions extracted from photoabsorption cross sections in the region of the Giant Dipole Resonance and from neutron-, photon- and charged-particle-induced reactions at energies around or below the neutron separation energy. We also present global empirical and microscopic models that describe the photon strength function in the entire photon energy region and reproduce reasonably well most of the existing experimental data. Finally, we recommend photon strength functions for use in basic sciences and applications. The compilation of experimental photon strengths as well as the recommended model calculations are readily available to the user community from a dedicated database hosted at the IAEA.
Dimitriou, P.*; Belgya, T.*; Cho, Y.-S.*; Filipescu, D.*; Firestone, R.*; Goriely, S.*; 岩本 信之; 河野 俊彦*; Kopecky, J.*; Krticka, M.*; et al.
EPJ Web of Conferences, 178, p.06005_1 - 06005_3, 2018/05
被引用回数：2 パーセンタイル：74.98(Optics)測定や既存のデータ評価・編集、また基礎科学や応用への利用に向けた巨大双極子共鳴パラメータ等のテーブル作成を基にした光核反応断面積や光子強度関数の開発について報告する。
-spectroscopy at an intense cold neutron beam facilityJentschel, M.*; Blanc, A.*; de France, G.*; K
ster, U.*; Leoni, S.*; Mutti, P.*; Simpson, G.*; Soldner, T.*; Ur, C.*; Urban, W.*; et al.
Journal of Instrumentation (Internet), 12(11), p.P11003_1 - P11003_33, 2017/11
被引用回数：38 パーセンタイル：84.92(Instruments & Instrumentation)A highly efficient array of high-purity germanium (HPGe) detectors was developed and operated at the cold neutron beam facility PF1B of the Institut Laue-Langevin (ILL) to carry out nuclear structure studies, via measurements of -rays following neutron-induced capture and fission reactions. The setup consisted of a collimation system producing a pencil beam with a thermal capture equivalent flux of about 10
ns
cm
at the target position and negligible neutron halo. The target was surrounded by an array of eight to ten anti-Compton shielded EXOGAM Clover detectors, four to six anti-Compton shielded large coaxial GASP detectors and two standard Clover detectors. For a part of the campaign the array was combined with 16 LaBr
:(Ce) detectors from the FATIMA collaboration.
erovnik, G.*; Becker, B.*; Belgya, T.*; Genreith, C.*; 原田 秀郎; Kopecky, S.*; Radulovi
, V.*; 佐野 忠史*; Schillebeeckx, P.*; Trkov, A.*
Nuclear Instruments and Methods in Physics Research A, 799, p.29 - 36, 2015/11
被引用回数：4 パーセンタイル：33.25(Instruments & Instrumentation)冷中性子ビームを用いた測定から、熱中性子捕獲断面積を導出する際の問題点を指摘するとともに、導出する中性子捕獲断面積の系統誤差を低減するための手法について提案するものである。これまでの冷中性子を用いた測定では、標準断面積との相対値より、熱中性子捕獲断面積が導出されてきた。本研究では、冷中性子ビームのエネルギー分布によっては、中性子捕獲断面積のエネルギー依存性が1/v則からずれる核種について、10%以上もの系統的誤差を生じることを明らかとした。中性子捕獲断面積のエネルギー依存性を考慮した断面積導出方法を適用することにより、この系統誤差は補正できることを示した。また、これまでに報告された文献値のいくつかには、冷中性子ビームのサンプル中での自己吸収補正が行われていない問題点があることも指摘した。
