Global properties of K hindrance probed by the ? decay of the warm rotating 174 W nucleus
Global properties of K hindrance probed by the ? decay of the warm rotating 174 W nucleus
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K 阻碍的全局特性由 ? 探测
DOI：
10.1103/physrevc.88.034312
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发表时间：
2013
影响因子：
3.1
通讯作者：
Vandone V
中科院分区：
文献类型：
--
作者：
Vandone V
研究了热旋转W核中衰变的阻碍，重点是量子数选择规则随着激发能的增加而减弱。W是由Ti（217 MeV）在Te靶上的聚变反应填充的，其衰变由法国莱尼亚罗国家实验室与BaF多重滤波器耦合的AGATA演示阵列检测到。 INFN。符合矩阵的波动分析给出了相似数量的低和高离散激发带。将结果与基于有限温度下微观曲柄壳模型的衰变流模拟进行比较，其中混合由科里奥利力与残余相互作用的相互作用控制。只有通过将低带和高带之间的衰变阻碍一定量，才能获得模拟和实验之间的一致性，阻碍量与相同质量区域中异构体的光谱研究确定的量相一致，并且与激发能具有相似的趋势。这项工作表明，由于温度效应而产生的混合可能对整个离散激发带体起主导作用，从而探测减弱的起始区域。
Thehindrance to thedecay is studied in the warm rotatingW nucleus, focusing on the weakening of the selection rules of thequantum number with increasing excitation energy.W was populated by the fusion reaction ofTi (at 217 MeV) on aTe target, and itsdecay was detected by the AGATA Demonstrator array coupled to a BaFmultiplicity filter at Laboratori Nazionali di Legnaro of INFN. A fluctuation analysis ofcoincidence matrices gives a similar number of low-and high-discrete excited bands. The results are compared to simulations of the-decay flow based on a microscopic cranked shell model at finite temperature in which themixing is governed by the interplay of Coriolis force with the residual interaction. Agreement between simulations and experiment is obtained only by hindering thedecay between low-and high-bands by an amount compatible with that determined by spectroscopic studies ofisomers in the same mass region, with a similar trend with excitation energy. The work indicates thatmixing due to temperature effects may play a leading role for the entire body of discrete excited bands, which probes the onset region ofweakening.