A study of proton-induced spallation reactions by the improved quantum molecular dynamics model plus statistical decay models

A study of proton-induced spallation reactions by the improved quantum molecular dynamics model plus statistical decay models
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改进的量子分子动力学模型和统计衰变模型研究质子诱发的散裂反应

DOI:
10.1088/0954-3899/36/12/125104
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发表时间:
2009-12
期刊:
Journal of Physics G
影响因子:
--
通讯作者:
--
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其他
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--
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采用改进的量子分子动力学模型(ImQMD 05),结合广义蒸发模型(GEM 2)和GEMINI模型,分析了质子诱导Spectrometry反应的逆运动学GSI数据.结果表明,ImQMD 05 + GEM 2模型能较好地再现质子在重靶(~(208)Pb,~(238)U和~(197)Au)上引起的溅射反应的质量和电荷分布的实验数据,ImQMD 05 +GEMINI模型能较好地再现质子在轻靶(~(56)Fe)上引起的溅射反应的质量和电荷分布的实验数据。用同样的模型也能很好地再现中能质子诱发的中子-质子双微分截面的实验数据,这表明它们对合并统计模型并不十分敏感。
The recent GSI data for proton-induced spallation reactions by using inverse kinematics are analyzed by the improved quantum molecular dynamics model (ImQMD05) merged with the generalized evaporation model (GEM2) and GEMINI model. We find that the model of ImQMD05+GEM2 reproduces the experimental data of mass and charge distributions for proton-induced spallation reactions on heavy targets (208Pb, 238U and 197Au) well and the model of ImQMD05+GEMINI reproduces the ones on light targets (56Fe) well. The experimental data for double differential cross sections of emitted neutrons and protons in intermediate energy proton-induced spallation reactions can also be reproduced well with the same models and this shows that they are not very sensitive to the merged statistical model.
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