Pre-equilibrium emission of light composite particles in the framework of the exciton model
Pre-equilibrium emission of light composite particles in the framework of the exciton model
复制标题
激子模型框架中轻复合粒子的预平衡发射
DOI：
10.1103/physrevc.28.1527
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发表时间：
1983
期刊：
影响因子：
--
通讯作者：
K. Harada
中科院分区：
文献类型：
--
作者：
K. Sato;A. Iwamoto;K. Harada
提出了轻复合粒子预平衡发射的激子模型，并将其应用于（p，... cap alpha..）Iwamoto-Harada反应的理论，进一步研究了入射能量为几十MeV的（p，d），（p，t）和（p，/sup 3/He）反应的能谱.计算结果可以再现这些光谱的整体特征。在平衡过程中发生的拾取型贡献的主导地位被发现是共同的所有复合颗粒。数据的拟合程度对于（p，t）反应与对于（p，.. cap alpha..）对（p，/sup 3/He）和（p，d）反应能谱的高能部分，其能量密度稍低。高能复合粒子的相对产额比也与我们的模型相当好地再现。这些事实表明，在我们的模型中假设的简单的反应机制占轻复合粒子的预平衡发射的特性。
The exciton model for the pre-equilibrium emission of light composite particles proposed and applied to the (p,..cap alpha..) reaction of Iwamoto-Harada is further investigated for the energy spectra of the (p,d), (p,t), and (p,/sup 3/He) reactions with incident energy of several tens of MeV's. Calculated results could reproduce an overall feature of those spectra. The dominance of the pickup-type contribution which occurs in the course of the equilibration process was found to be common for all composite particles. The degree of fitting to the data is excellent for (p,t) reactions to the same extent as for (p,..cap alpha..) reactions, and is somewhat less for the high energy part of energy spectra of (p,/sup 3/He) and (p,d) reactions. The relative ratio of yields of high energy composite particles was also reproduced fairly well with our model. These facts suggest that the simple reaction mechanism assumed in our model accounts for characteristics of the pre-equilibrium emission of light composite particles.