【摘要】 (1) 为了避免RGM中冗长的计算过程,本文从物理图象的考虑出发,提出了一种略去核心交换的共振群方法(QRGM)。该方法对于以双幻数核C为核心的三集团系统A+(BC),认为C是严格封闭的,于是可抛弃C与其他两个集团之间的反对称交换和各种交换力,但仍保留其他非满壳集团之间的反对称交换和各种交换力。(2) 按这种三集团模型推导给出了单道QRGM的一般公式。(3) 将这种QRGM用于A=d,B=0,C=α的d+α系统,计算了弹性散射相移和微分散射截面,得到的结果与实验符合甚好,初步说明了这种QRGM简单而有效。(对于三集团n+~6Li(d+α)的QRGM研究也得到了满意的结果,将另文发表。)(4) 讨论了d+α散射中交换效应的影响。更多还原

【Abstract】 (a) In order to avoid the tedious calculation in RGM, a reduced RGM which omit the exchange effects of nuclear core is proposed starting from physic considerations (Briefly, this is called QRGM). For a three-cluster system A+(BC), if C is a double-closed cluster, the QRGM abandons the antisymmetric procedure and various exchange forces between nuclear core C and other two clusters, but it still retains those between other non-closed clusters. (b) According to this model, the general formulae of three-cluster system under single channel treatment are derived. (c) Using the QRGM to d+a system, the phase shifts and differential cross sections of elastic scattering processes are calculated and the results agree well to the experiment data. This shows essentially that the QRGM is simple and effective (It is worth mentioning that by using QRGM. The satisfactory results are also obtained in the study of three-cluster system n+~6Li(d+a). We shall report this in another paper.) (d) The exchange effects in d+a scattering is discussed.更多还原