论文标题
通过质子和α非弹性散射探测$^{24} $ mg的负值状态
Probing negative-parity states of $^{24}$Mg probed via proton and alpha inelastic scattering
论文作者
论文摘要
[背景：] $^{24} $ mg的负值状态的频段结构尚未澄清。 $ k^π= 0^ - $，$ k^π= 1^ - $和$ k^π= 3^ - $ bands bands已被建议，但是在实验和理论之间，分配不一致。 [目的：] $^{24} $ mg的负值状态通过微观结构和反应计算通过质子和α非弹性散射来研究，以阐明观察到的负平性光谱的频带分配。 [方法：] $^{24} $ mg的结构是使用反对称分子动力学〜（AMD）计算的。通过折叠墨尔本$ g $ -matrix $ nn $与AMD密度的$^{24} $ mg相互作用，使用微观耦合通道（MCC）计算来计算质子和α非弹性反应。 [结果：] $ k^π= 0^+$，$ k^π= 2^+$，$ k^π= 0^ - $，$ k^π= 1^ - $和$ k^π= 3^ - $^$ band of $^{24} $ mg的$ bands $ mg。在质子和阿尔法弹性和非弹性横截面的MCC+AMD结果中，与现有数据获得了合理的协议，除非$ 4^+_ 1 $状态。 [结论：] $ 3^ - $ $ k^π= 3^ - $ band和$ 1^ - $和$ 3^ - $ k^π= 0^ - $ band的$ band被分配给$ 3^-_ 1 $（7.62 meV），$ 1^-_ 1^-_ 1 $（7.56 mev），$ 3^-3^-_2^-_ 2 $ 3^-_2 $ 3^-2.36 MEV（8.36 MEV）MEV（8.36 MEV），MEV。当前的AMD计算是第一个重现$ k^π= 0^ - $，$ k^π= 1^ - $和$ k^π= 3^ - $^{24} $ mg的$ k^π= 1^ - $的能量顺序的计算。
[Background:] The band structure of the negative-parity states of $^{24}$Mg has not yet been clarified. The $K^π=0^-$, $K^π=1^-$, and $K^π=3^-$ bands have been suggested, but the assignments have been inconsistent between experiments and theories. [Purpose:] Negative-parity states of $^{24}$Mg are investigated by microscopic structure and reaction calculations via proton and alpha inelastic scattering to clarify the band assignment for the observed negative-parity spectra. [Method:] The structure of $^{24}$Mg was calculated using the antisymmetrized molecular dynamics~(AMD). Proton and alpha inelastic reactions were calculated using microscopic coupled-channel (MCC) calculations by folding the Melbourne $g$-matrix $NN$ interaction with the AMD densities of $^{24}$Mg. [Results:] The member states of the $K^π=0^+$, $K^π=2^+$, $K^π=0^-$, $K^π=1^-$, and $K^π=3^-$ bands of $^{24}$Mg were obtained through the AMD result. In the MCC+AMD results for proton and alpha elastic and inelastic cross sections, reasonable agreements were obtained with existing data, except in the case of the $4^+_1$ state. [Conclusions:] The $3^-$ state of the $K^π=3^-$ band and the $1^-$ and $3^-$ states of the $K^π=0^-$ bands were assigned to the $3^-_1$(7.62 MeV), $1^-_1$(7.56 MeV), and $3^-_2$(8.36 MeV) states, respectively. The present AMD calculation is the first microscopic structure calculation to reproduce the energy ordering of the $K^π=0^-$, $K^π=1^-$, and $K^π=3^-$ bands of $^{24}$Mg.
