论文标题
$^{48} $ ca中等iSscalar巨型单极共振的精细结构
Fine structure of the isoscalar giant monopole resonance in $^{48}$Ca
论文作者
论文摘要
使用高能量分辨率的能力和零能量的零能设置，使用200 meVα非弹性散射反应进行了研究48CA的等巨型单极共振（ISGMR）的精细结构的实验。在ISGMR的能量区域观察到了相当大的结构。通过小波分析从实验数据中提取了特征能量尺度，并将使用有限级分离近似值（随机分离近似值）与声音 - 偶音（PPC）纳入Skyrme-RPA（随机相位近似）方法中的最新理论计算方法。在实验数据和理论预测之间观察到了良好的一致性。
Experiments investigating the fine structure of the IsoScalar Giant Monopole Resonance (ISGMR) of 48Ca were carried out with a 200 MeV alpha inelastic-scattering reaction, using the high energy-resolution capability and the zero-degree setup at the K600 magnetic spectrometer of iThemba LABS, Cape Town, South Africa. Considerable fine structure is observed in the energy region of the ISGMR. Characteristic energy scales are extracted from the experimental data by means of a wavelet analysis and compared with the state-of-the-art theoretical calculations within a Skyrme-RPA (random phase approximation) approach using the finite-rank separable approximation with the inclusion of phonon-phonon coupling (PPC). Good agreement was observed between the experimental data and the theoretical predictions.
