TALYS calculations of prompt fission observables and independent fission product yields for the neutron-induced fission of 235U

被引：0

作者：

Fujio, Kazuki ^{[1
]}

Al-Adili, Ali ^{[2
]}

Nordstrom, Fredrik ^{[2
]}

Lemaitre, Jean-Francois ^{[3
]}

Okumura, Shin ^{[4
]}

Chiba, Satoshi ^{[5
,6
]}

Koning, Arjan ^{[4
]}

机构：

[1] Tokyo Inst Technol, Sch Environm & Soc, Dept Transdisciplinary Sci & Technol, Nucl Engn Course, 2-12-1 Ookayama,Meguro, Tokyo 1528550, Japan

[2] Uppsala Univ, Dept Phys & Astron, S-75120 Uppsala, Sweden

[3] CEA DAM Ile de France, F-91297 Bruyeres Le Chatel, France

[4] Vienna Int Ctr, Int Atom Energy Agcy, NAPC Nucl Data Sect, A-1400 Vienna, Austria

[5] NAT Corp, NAT Res Ctr, 3129-45 Hibara, Tokai, Ibaraki 3191112, Japan

[6] Tokyo Inst Technol, 2-12-1 Ookayama,Meguro, Tokyo 1528550, Japan

来源：

EUROPEAN PHYSICAL JOURNAL A | 2023年 / 59卷 / 08期

关键词：

NUCLEAR-LEVEL DENSITY; GAMMA-RAYS; MODEL; SPECTRA; FORMULA; LIBRARY; SHELL;

D O I：

10.1140/epja/s10050-023-01095-4

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The TALYS nuclear reaction code's Hauser-Feshbach statistical decay model has been adapted in order to calculate prompt fission neutron and ?-ray observables by iterating over deexciting fission fragments. Several fission fragment generators such as GEF, HF3D, and SPY were employed to provide TALYS with databases. These databases contain standardized tables with fission fragment yields, mean excitation energies and their widths, and aver-age total kinetic energy, as a function of charge and mass number of primary fission fragments. The resulting calcula-tions, including prompt particle multiplicities, spectra, aver-age energies, and independent fission product yields, were compared with experimental and evaluated data. This work first outlines the new methodology implemented in TALYS and examines the effects of three important parameters on the final evaporation data. Furthermore, the neutron-induced fission of U-235 is investigated in detail as a function of inci-dent energy. The results from TALYS, with input from GEF and (HFD)-D-3, were compared with available experimental data and the results of the stand-alone GEF code. The proposed methodology contributes to an improved capability to model the fission process.

引用

页数：13

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