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arXiv 1104.3940nucl-th
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反对称分子动力学研究超核形变

Deformation of hypernuclei studied with antisymmetirzed molecular dynamics

Masahiro Isaka, Masaaki Kimura, Akinobu Dote, Akira Ohnishi

摘要:

本文发展了一种推广的反对称分子动力学方法,用于研究$p$ - $sd$壳层超核的结构.利用有效的$ΛN$相互作用,研究了$^9_Λ$ Be,$^{13}_Λ$ C和$^{20,21}_Λ$ Ne的能量随核四极形变的变化曲线.讨论了$Λ$粒子引起的原子核形变的变化。发现p波的$Λ$增强核形变,而s波的$Λ$减弱核形变,这种效应在$^{13}_Λ$ C中最为显著。本文还讨论了$^{20}_Λ$ Ne中宇称反转的可能性。

英文摘要:

An extended version of the antisymmetrized molecular dynamics to study structure of $p$-$sd$ shell hypernuclei is developed. By using an effective $ΛN$ interaction, we investigate energy curves of $^9_Λ$Be, $^{13}_Λ$C and $^{20,21}_Λ$Ne as function of nuclear quadrupole deformation. Change of nuclear deformation caused by $Λ$ particle is discussed. It is found that the $Λ$ in p-wave enhances nuclear deformation, while that in s-wave reduces it. This effect is most prominent in $^{13}_Λ$C. The possibility of the parity inversion in $^{20}_Λ$Ne is also examined.

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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