Effects of the nuclear structure of fission fragments on the high-energy prompt fission gamma-ray spectrum in U-235(n(th), f)
文献类型：期刊论文
| 作者 | Makii, H.1; Nishio, K.1; Hirose, K.1; Orlandi, R.1; Leguillon, R.1; Ogawa, T.2; Soldner, T.3; Koster, U.3; Pollitt, A.3; Hambsch, F-J4 |
| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2019-10-21 |
| 卷号 | 100期号:4页码:7 |
| ISSN号 | 2469-9985 |
| DOI | 10.1103/PhysRevC.100.044610 |
| 通讯作者 | Makii, H.(makii.hiroyuki@jaea.go.jp) |
| 英文摘要 | The prompt fission gamma-ray energy spectrum for cold-neutron-induced fission of U-235 was measured in the energy range E-gamma = 0.8-20 MeV, by gaining a factor of about 10(5) in statistics compared to the measurements performed so far. The spectrum exhibits local bump structures at E-gamma approximate to 4 MeV and approximate to 6 MeV, and also a broad one at approximate to 15 MeV. In order to understand the origins of these bumps, the gamma-ray spectra were calculated using a statistical Hauser-Feshbach model, taking into account the deexcitation of all the possible primary fission fragments. It is shown that the bump at approximate to 4 MeV is created by the transitions between the discrete levels in the fragments around Sn-132, and the bump at approximate to 6 MeV mostly comes from the complementary light fragments. It is also indicated that a limited number of nuclides, which have high-spin states at low excitation energies, can contribute to the bump structure around E-gamma approximate to 15 MeV, induced by the transition feeding into the low-lying high-spin states. |
| WOS关键词 | NEUTRON-INDUCED FISSION ; MULTIMODAL ANALYSIS ; EMISSION ; MULTIPLICITY ; FORMULA ; MODELS ; SYSTEM |
| 资助项目 | Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT) |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000491263100004 |
| 出版者 | AMER PHYSICAL SOC |
| 资助机构 | Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT) |
| 源URL | [http://119.78.100.186/handle/113462/141746]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Makii, H. |
| 作者单位 | 1.Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan 2.Japan Atom Energy Agcy, Nucl Sci & Engn Ctr, Tokai, Ibaraki 3191195, Japan 3.Inst Laue Langevin, F-38000 Grenoble, France 4.European Commiss, Joint Res Ctr, B-2440 Geel, Belgium 5.Univ Bordeaux, CNRS, IN2P3, CENBG, 19 Chemin Solarium, F-33175 Gradignan, France 6.Univ Paris Sud, Ctr Sci Nucl & Sci Mat, F-91405 Orsay, France 7.CNRS, IN2P3, F-91405 Orsay, France 8.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 9.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China 10.Kyoto Univ, Inst Integrated Radiat & Nucl Sci, Kumatori, Osaka 5904094, Japan |
| 推荐引用方式 GB/T 7714 | Makii, H.,Nishio, K.,Hirose, K.,et al. Effects of the nuclear structure of fission fragments on the high-energy prompt fission gamma-ray spectrum in U-235(n(th), f)[J]. PHYSICAL REVIEW C,2019,100(4):7. |
| APA | Makii, H..,Nishio, K..,Hirose, K..,Orlandi, R..,Leguillon, R..,...&Kawano, T..(2019).Effects of the nuclear structure of fission fragments on the high-energy prompt fission gamma-ray spectrum in U-235(n(th), f).PHYSICAL REVIEW C,100(4),7. |
| MLA | Makii, H.,et al."Effects of the nuclear structure of fission fragments on the high-energy prompt fission gamma-ray spectrum in U-235(n(th), f)".PHYSICAL REVIEW C 100.4(2019):7. |
入库方式： OAI收割
来源：近代物理研究所
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