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arXiv 0808.2663nucl-th
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过渡核的电磁偶极强度

Electromagnetic Dipole Strength in Transitional Nuclei

S. Q. Zhang, I. Bentley, S. Brant, F. Dönau, S. Frauendorf, B. Kämpfer, R. Schwengner, A. Wagner

摘要:

通过引入瞬时形状取样的概念,从微观上计算了具有大振幅形状起伏的过渡核的电磁偶极吸收截面。这个概念的基础上缓慢的形状动力学相比,快速偶极振动。用RPA计算了瞬时形状的电磁偶极强度,用IBA计算了瞬时形状出现的概率。在核子发射阈值附近,计算结果与实验吸收截面符合得很好.

英文摘要:

Electromagnetic dipole absorption cross-sections of transitional nuclei with large-amplitude shape fluctuations are calculated in a microscopic way by introducing the concept of Instantaneous Shape Sampling. The concept bases on the slow shape dynamics as compared to the fast dipole vibrations. The elctromagnetic dipole strength is calculated by means of RPA for the instantaneous shapes, the probability of which is obtained by means of IBA. Very good agreement with the experimental absorption cross sections near the nucleon emission threshold is obtained.

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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