| 用共振群方法计算~7Be的~3He-~4He集团态的E2、M1跃迁 |
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| 引用本文： | 徐浦. 用共振群方法计算~7Be的~3He-~4He集团态的E2、M1跃迁[J]. 南京理工大学学报(自然科学版), 1991, 0(4) |
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| 作者姓名： | 徐浦 |
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| 作者单位： | 华东工学院应用物理系 |
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| 摘 要： | 该文假定~7Be的基态和第1,2,3激发态是~3He-~4He集团态,用共振群方法(RGM)计算这些态的本征能量和本征函数,并用这些函数计算了这些态之间的M1、E2跃迁几率,所得结果与实验基本符合,说明了~7Be的基态和第1,2,3激发态主要是~3He-~4He集团态,也说明了用RGM来研究核的集团态是很有效的,特别是理论计算的跃迁与实验的符合说明了计算中求得的各态的波函数是比较好的。
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| 关 键 词： | 核结构 特征值 计算 跃迁几率 ~7Be 集团态 特性函数 黄振群法 |
Analysis of the E2 and M1 Transitions for the 3~He-4~He Cluster States of 7~Be with Resonating Group Method |
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| Xu Pu. Analysis of the E2 and M1 Transitions for the 3~He-4~He Cluster States of 7~Be with Resonating Group Method[J]. Journal of Nanjing University of Science and Technology(Nature Science), 1991, 0(4) |
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| Authors: | Xu Pu |
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| Affiliation: | Xu Pu Department of Applied Physics |
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| Abstract: | It is suggested that the ground state and 1st, 2nd and 3rd excitedstates of ~7Be are ~3 He - ~4 He cluster-structure states. Using RGM,the eigenval-ues and eigenfunctions of these stutes are calculated,and the resulting eigen-functions are used to calculate the reduced E2 and M1 transition probabilitiesfor these states. The results are satisfactorily consistent with the experimentalvalues. These results show that the ground state and the 1st, 2nd and 3rd excit-ed states are indeed mainly the ~3 He -~4 He cluster-structure states and it is veryeffective to study nuclear cluster-structure states using RGM,and especially,the agreement between the theoretical and experimental transition valuesshows that the calculated RGM wave functions for the states considered aregood. |
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| Keywords: | nuclear structure eigenvalue computation transition probability Be cluster-structure states eigenfunction resonance group methods |
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