### 抄録

The clustering exciton model of Iwamoto and Harada is applied to the analysis of pre-equilibrium (N, xα) energy spectra for medium-to-heavy nuclei up to 200 MeV. In this work, we calculate alpha-particle formation factors without any approximations that appear in the original model. The clustering process is also considered in both the primary and second pre-equilibrium emissions. We optimize the exciton and the clustering model parameters simultaneously by looking at the experimental (N, xN) and (N, xα) energy spectra. The experimental alpha-particle spectra are well reproduced with a unique set of clustering model parameters, which is independent of incident neutrons/protons. The present analysis also implies that the clustering model parameter is not so different between the medium and heavy nuclei. Our calculations reproduce experimental data generally well up to the incident energy of ~150 MeV, but underestimations are seen above this energy.

元の言語 | 英語 |
---|---|

記事番号 | 09003 |

ジャーナル | EPJ Web of Conferences |

巻 | 21 |

DOI | |

出版物ステータス | 出版済み - 12 1 2012 |

イベント | 3rd International Workshop on Compound Nuclear Reactions and Related Topics, CNR 2011 - Prague, チェコ共和国 継続期間: 9 19 2011 → 9 23 2011 |

### Fingerprint

### All Science Journal Classification (ASJC) codes

- Physics and Astronomy(all)

### これを引用

*EPJ Web of Conferences*,

*21*, [09003]. https://doi.org/10.1051/epjconf/20122109003

**Clustering Pre-equilibrium Model Analysis for Nucleon-induced Alpha-particle Spectra up to 200 MeV.** / Kunieda, S.; Kawano, T.; Chadwick, M. B.; Fukahori, T.; Watanabe, Yukinobu.

研究成果: ジャーナルへの寄稿 › Conference article

*EPJ Web of Conferences*, 巻. 21, 09003. https://doi.org/10.1051/epjconf/20122109003

}

TY - JOUR

T1 - Clustering Pre-equilibrium Model Analysis for Nucleon-induced Alpha-particle Spectra up to 200 MeV

AU - Kunieda, S.

AU - Kawano, T.

AU - Chadwick, M. B.

AU - Fukahori, T.

AU - Watanabe, Yukinobu

PY - 2012/12/1

Y1 - 2012/12/1

N2 - The clustering exciton model of Iwamoto and Harada is applied to the analysis of pre-equilibrium (N, xα) energy spectra for medium-to-heavy nuclei up to 200 MeV. In this work, we calculate alpha-particle formation factors without any approximations that appear in the original model. The clustering process is also considered in both the primary and second pre-equilibrium emissions. We optimize the exciton and the clustering model parameters simultaneously by looking at the experimental (N, xN) and (N, xα) energy spectra. The experimental alpha-particle spectra are well reproduced with a unique set of clustering model parameters, which is independent of incident neutrons/protons. The present analysis also implies that the clustering model parameter is not so different between the medium and heavy nuclei. Our calculations reproduce experimental data generally well up to the incident energy of ~150 MeV, but underestimations are seen above this energy.

AB - The clustering exciton model of Iwamoto and Harada is applied to the analysis of pre-equilibrium (N, xα) energy spectra for medium-to-heavy nuclei up to 200 MeV. In this work, we calculate alpha-particle formation factors without any approximations that appear in the original model. The clustering process is also considered in both the primary and second pre-equilibrium emissions. We optimize the exciton and the clustering model parameters simultaneously by looking at the experimental (N, xN) and (N, xα) energy spectra. The experimental alpha-particle spectra are well reproduced with a unique set of clustering model parameters, which is independent of incident neutrons/protons. The present analysis also implies that the clustering model parameter is not so different between the medium and heavy nuclei. Our calculations reproduce experimental data generally well up to the incident energy of ~150 MeV, but underestimations are seen above this energy.

UR - http://www.scopus.com/inward/record.url?scp=84873441399&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84873441399&partnerID=8YFLogxK

U2 - 10.1051/epjconf/20122109003

DO - 10.1051/epjconf/20122109003

M3 - Conference article

AN - SCOPUS:84873441399

VL - 21

JO - EPJ Web of Conferences

JF - EPJ Web of Conferences

SN - 2101-6275

M1 - 09003

ER -