Scattering and Reaction Cross Sections in the p+α System with the Multiconfiguration Resonating-Group Method : Nuclear Physics

概要

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Differential cross sections for scattering and reactions, initiated from the p+ α incident channel, are computed with the multi-configuration resonating-group method. The model space is spanned by p+α, d+^3He, 2p+ t and d'+^3He cluster configurations, supplemented by their associated pseudo-inelastic configurations. With the Minnesota nucleon-nucleon potential and a total of 25 cluster configurations, the results show that, with no adjustable parameters, the calculation can satisfactorily explain all the essential features of the measured scattering and reaction angular distributions, such as the angular positions of cross-section maxima and minima, the strong cross-section rise at backward angles, and so on. The only defect is that the calculated values of the cross sections are on-the-average somewhat too large, which is correlated with the finding that the calculated p+α total reaction cross sections are not yet large enough, being equal to only about 70-80 % of the measured values. The way to improve the calculation is also discussed.
理論物理学刊行会の論文
1995-12-25