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Thick target neutron yields from 100- and 230-MeV/nucleon helium ions bombarding water, PMMA, and iron
https://repo.qst.go.jp/records/76665
https://repo.qst.go.jp/records/76665a557fdf4-19e9-4b0e-9ae3-cd0c204f8639
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-09-05 | |||||
| タイトル | ||||||
| タイトル | Thick target neutron yields from 100- and 230-MeV/nucleon helium ions bombarding water, PMMA, and iron | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
En Tsai, Pi
× En Tsai, Pi× Heilbronn, Lawrence× Bo-Lun, Lai× Iwata, Yoshiyuki× Murakami, Takeshi× Rong-Jiun, Sheu× En Tsai, Pi× Heilbronn, Lawrence× Iwata, Yoshiyuki× Murakami, Takeshi |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The secondary neutrons produced from 100- and 230-MeV/nucleon 4He ions, respectively, stopping in the thick natFe, PMMA and water targets are measured by the time of flight method combined with the pulse shape discrimination of liquid scintillation detectors. The experimental data show that the secondary neutrons were contributed from breakup of projectiles, emission from overlap regions of projectile nuclei and target nuclei, and evaporation of projectiles and target nuclei. The measured quantities, including the double-differential thick target neutron yields, angular distributions, and total neutron yields per ion, were benchmarked against model calculations with the PHITS, FLUKA, and MCNP Monte Carlo simulation codes. The default models implemented in these codes agree the experimental data well at intermediate-to-large angles in the low-to-intermediate energy range. However, the physics models implemented in the FLUKA and the PHITS codes under-predict secondary neutrons at energies higher than the specific beam energies by more than one order. The energy-integrated simulation yields at 0° differ from the measured values by −75% to 240%. The underestimation of low-energy neutron yields by the models at small angles for 230-MeV/nucleon 4He projectiles on the light targets are as much as five times lower. Our results indicate that improvements are needed in the physics models used to describe 4He-induced nuclear reactions for predictions of neutron production. | |||||
| 書誌情報 |
Nuclear Instruments and Methods in Physics Research Section B 巻 449, p. 62-70, 発行日 2019-06 |
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| 出版者 | ||||||
| 出版者 | Elsevier | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0168-583X | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1016/j.nimb.2019.04.030 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://www.sciencedirect.com/science/article/pii/S0168583X19302149 | |||||
