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arXiv 1104.3967nucl-th
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Si-28周围N = Z \pm 2核2^+_2 -> 0^+_1跃迁的质子优势

Proton dominance in the 2^+_2 -> 0^+_1 transition of N = Z\pm 2 nuclei around Si-28

Yoshiko Kanada-En'yo

摘要:

用反对称分子动力学方法研究了Si-30中E2跃迁与内禀形变的关系。通过比较镜像核Si-30和S-30的E2跃迁强度,讨论了镜像分析中质子和中子的跃迁矩阵振幅M_p和M_n。特别注意了从2^+_2态到0^+_1态跃迁的M_n/M_p比值。本文还研究了Mg-26和Si-26中的M_n/M_p比。发现Si-30和Si-26中2^+_2 -> 0^+_1跃迁的质子优势源于Z=14质子结构的扁圆趋势。

英文摘要:

E2 transitions in Si-30 are investigated in relation with intrinsic deformations based on a method of antisymmetrized molecular dynamics. By comparing E2 transition strengths in the mirror nuclei Si-30 and S-30, transition matrix amplitudes M_p and M_n for protons and neutrons are discussed in mirror analysis. Particular attention is paid to the M_n/M_p ratio in the transition from the 2^+_2 state to the 0^+_1 state. The M_n/M_p ratio in Mg-26 and Si-26 is also investigated. It is found that the proton dominance in the transition 2^+_2 -> 0^+_1 in Si-30 and Si-26 originates in the oblate trend of the Z=14 proton structure.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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