稳定的SN中质量核中男性共振的激发

论文标题

稳定的SN中质量核中男性共振的激发

Excitation of baryonic resonances in stable medium-mass nuclei of Sn

论文作者

Rodriguez-Sanchez, J L, Benlliure, J, Haettner, E, Scheidenberger, C, Vargas, J, Ayyad, Y, Alvarez-Pol, H, Atkinson, J, Aumann, T, Beceiro-Novo, S, Boretzky, K, Caamaño, M, Casarejos, E, Cortina-Gil, D, Fernandez, P Diaz, Estrade, A, Geissel, H, Itahashi, K, Kelic-Heil, A, Lenske, H, Litvinov, Yu A, Paradela, C, Perez-Loureiro, D, Pietri, S, Prochazka, A, Saito, T R, Takechi, M, Tanaka, Y K, Vidaña, I, Weick, H, Winfield, J S, collaboration, the Super-FRS experiment

论文摘要

使用片段分离器FRS研究了GSI设施的束束引起的112SN束引起的等质电荷交换反应。该光谱仪的高分辨率能力使得获得3％的准确性的等质电荷交叉截面，并在缺失能量的光谱中分离出准弹性和无弹性贡献，在这种光谱中，无弹性组件与$δ$Δ$δ$δ$δ$δ$δ$δ$Δ的中等兴奋性相关。我们报告了（p，n）和（n，p）通道获得的结果，该结果通过使用覆盖中子多余范围的不同目标而激发的。

Isobaric charge-exchange reactions induced by beams of 112Sn have been investigated at the GSI facilities using the fragment separator FRS. The high-resolving power of this spectrometer makes it possible to obtain the isobaric charge-exchange cross sections with an accuracy of 3% and to separate quasi-elastic and inelastic contributions in the missing-energy spectra, in which the inelastic component is associated to the in-medium excitation of baryonic resonances such as the $Δ$ resonance. We report on the results obtained for the (p,n) and (n,p) channels excited by using different targets that cover a large range in neutron excess.

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