在232 Pa的第三最小值下的透射共振光谱
Transmission resonance spectroscopy in the third minimum of 232Pa
摘要：
为了寻找231 Pa靶上（d，pf）转移反应的超形变（HD）透射共振，测量了232 Pa裂变几率与激发能的关系。实验是在加尔兴的迈尔-莱布尼茨实验室（MLL）的串列加速器上进行的，使用231 Pa（d，pf）反应，轰击能量为E=12 MeV，能量分辨率为dE=5.5 keV。在E=5.7和5.9 MeV的激发能处观察到两组透射共振。在E=5.7 MeV的共振群的精细结构可以被解释为重叠的旋转带的旋转参数特性的HD核形状。用TINGS 1.2核反应程序计算裂变几率的总体结构，确定了~（232）Pa的裂变势垒参数。由J=4态的平均能级间距，推导出第三最小值的基态的激发能为E（III）=5.05 MeV。
英文摘要：
The fission probability of 232Pa was measured as a function of the excitation energy in order to search for hyperdeformed (HD) transmission resonances using the (d,pf) transfer reaction on a radioactive 231Pa target. The experiment was performed at the Tandem accelerator of the Maier-Leibnitz Laboratory (MLL) at Garching using the 231Pa(d,pf) reaction at a bombarding energy of E=12 MeV and with an energy resolution of dE=5.5 keV. Two groups of transmission resonances have been observed at excitation energies of E=5.7 and 5.9 MeV. The fine structure of the resonance group at E=5.7 MeV could be interpreted as overlapping rotational bands with a rotational parameter characteristic to a HD nuclear shape. The fission barrier parameters of 232Pa have been determined by fitting TALYS 1.2 nuclear reaction code calculations to the overall structure of the fission probability. From the average level spacing of the J=4 states, the excitation energy of the ground state of the 3rd minimum has been deduced to be E(III)=5.05 MeV.
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。
