Pu for JENDL-3.3Puの中性子入射反応の評価Iwamoto, Osamu; Nakagawa, Tsuneo
10eVから20MeVの入射中性子に対するPuの断面積と放出中性子の角度分布及びエネルギー分布を統計模型とチャンネル結合光学模型を用いて評価した。計算結果はENDF-6フォーマットに編集し評価済核データライブラリJENDL-3.3に格納した。10eVから30keVを非分離共鳴領域とし、断面積を再現する平均の共鳴パラメータを求めた。核分裂中性子のエネルギー分布を与えるMaxwell温度を計算した断面積を用いて系統式から推定した。
Cross sections and energy-angular distributions of emitted neutrons were evaluated for the neutron-incident reactions on Pu in the incident energy range of 10eV to 20MeV by using a statistical model combined with a coupled channel optical model. The calculated results were compiled to the latest evaluated nuclear data library JENDL-3.3 in the ENDF-6 format. The unresolved resonance region is assumed to be from 10eV to 30keV, and the averaged resonance parameters were obtained to reproduce the calculated cross sections. Maxwell temperatures for fission neutron spectra were estimated from a systematics with a correction for prefission neutrons.
使用言語 |
: | English |
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報告書番号 |
: | JAERI-Research 2002-013 |
ページ数 |
: | 18 Pages |
発行年月 |
: | 2002/07 |
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論文URL |
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キーワード |
: | Nuclear Data; Evaluation; Pu-236; Neutron; Cross Section; Statistical Model; Optical Model; Coupled Channel Calculation |
Access |
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