Isospin structure of Jπ=1+ states in Ni58 and Cu58 studied by Ni58(p,p') and Ni58(He3,t)Cu58 measurements
Isospin structure of Jπ=1+ states in Ni58 and Cu58 studied by Ni58(p,p') and Ni58(He3,t)Cu58 measurements
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通过 Ni58(p,p) 和 Ni58(He3,t)Cu58 测量研究 Ni58 和 Cu58 中 Jπ=1+ 态的同位旋结构
DOI：
10.1103/physrevc.75.034310
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发表时间：
2007
影响因子：
3.1
通讯作者：
M. Yosoi
中科院分区：
文献类型：
--
作者：
H. Fujita;Y. Fujita;T. Adachi;A. Bacher;G. Berg;T. Black;E. Caurier;C. Foster;H. Fujimura;K. Hara;K. Harada;K. Hatanaka;J. Jänecke;J. Kamiya;Y. Kanzaki;K. Katori;T. Kawabata;K. Langanke;G. Martínez;T. Noro;D. Roberts;H. Sakaguchi;Y. Shimbara;T. Shinada;E. Stephenson;H. Ueno;T. Yamanaka;M. Yoshifuku;M. Yosoi
在核相互作用与电荷无关的假设下，同位旋是一个很好的量子数。对于具有相同质量数但具有不同同位旋分量的原子核，预期会有类似的激发态结构，其中。通过比较和中从基态（初始同位旋和）到和中的Gamow-Teller（GT）态（）的跃迁，研究了同量异位核和的类似结构。为此，我们测量了MeV质子的非弹性散射（）和140 MeV/核子的电荷交换反应（），分别在激发末态为同位旋和2和1，和2.高能量和散射角的分辨率实现了通过应用完整的光束匹配技术。根据激发能与跃迁强度的对应关系，确定了模拟GT和态的同位旋值和2。态分布也与（）、（）和（）实验的结果进行了比较，其中只有态被激发。将获得的GT强度分布与壳模型计算结果进行比较。
Isospin is a good quantum number under the assumption that the nuclear interaction is charge independent. An analogous structure of excited states is expected for nuclei with the same mass numberbut with differentcomponentsof the isospin, where. The analogous structure has been studied for the isobaric nucleiandby comparing the transitions from theground state (initial isospinand) to theand the Gamow-Teller (GT) states () inand, respectively. For this purpose, proton inelastic scattering () atMeV and the charge-exchange (,) reaction at 140 MeV/nucleon were both measured at, exciting final states with isospinand 2 and, 1, and 2, respectively. High energy and scattering-angle resolutions were achieved by applying complete beam matching techniques. On the basis of the correspondence between excitation energies and transition strengths, isospin valuesand 2 of analog GT andstates were identified. The distribution ofstates was also compared with results of(),(), and() experiments, in which onlystates are excited. The obtained GT strength distribution is compared with the results of shell-model calculations.