Surface and collective effects in preequilibrium reactions
Surface and collective effects in preequilibrium reactions
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预平衡反应中的表面效应和集体效应
DOI：
10.1103/physrevc.62.044608
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
C. Kalbach
中科院分区：
文献类型：
--
作者：
C. Kalbach
在激子预平衡模型的框架内，研究了入射能量为14\char21{}100 MeV的质子和中子的初始靶-射弹相互作用的表面局域化。入射中子，至少在能量高达约30兆电子伏，显示出更大量的表面峰化比入射质子作为判断的有效井深度可用于孔的自由度创建。包括这种差异，激子模型计算可以描述所有四个$（N，N）$反应通道的能量谱与一组一致的模型输入。为了帮助这项研究，强光谱集体态的激发被包括在计算中。巨共振态激发的加入有一个小的但有帮助的效果。需要更多的数据，特别是26兆电子伏以上的入射中子的数据。
Surface localization of the initial target-projectile interaction has been investigated for incident protons and neutrons at bombarding energies of 14\char21{}100 MeV within the framework of the exciton preequilibrium model. Incident neutrons, at least at energies up to around 30 MeV, show a greater amount of surface peaking than do incident protons as judged by the effective well depth available to the hole degree of freedom created. With this difference included, exciton model calculations can describe the energy spectra in all four $(N,N)$ reaction channels with a consistent set of model input. To aid in this study, the excitation of strong spectroscopic collective states was included in the calculations. The addition of giant resonance state excitation has a small but helpful effect. There is a need for additional data, especially for incident neutrons above 26 MeV.