Lifetime measurements in A~100 nuclei using LaBr 3 (Ce) arrays.
Lifetime measurements in A~100 nuclei using LaBr 3 (Ce) arrays.
复制标题
使用 LaBr 3 (Ce) 阵列测量 A~100 原子核的寿命。
DOI：
10.1051/epjconf/201817802010
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发表时间：
2018
影响因子：
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通讯作者：
Bruce A
中科院分区：
文献类型：
--
作者：
Bruce A
在富含中子的A 100核周围的区域，长扁核和扁核的形状预计将处于激烈的竞争中。通过测量能级寿命可以间接测量核的形状，能级寿命通过跃迁速率与β 2形变有关。为了测量亚纳秒级的能级寿命，在达姆施塔特，德国的FAIR设施中建造了一个由36个LaBr 3（Ce）探测器组成的阵列。本报告将概述该阵列及其在日本RIKEN Nishina中心和美国阿贡国家实验室的调试实验中的使用示例。
The region of the nuclear chart around neutron-rich A∼100 nuclei is one where prolate and oblate nuclear shapes are predicted to be in close competition. An indirect measurement of the shape of the nucleus can be obtained from measuring level lifetimes which relate, via transition rates, toβ2deformation. In order to make measurements of level lifetimes in the sub nanosecond range an array of 36 LaBr3(Ce) detectors has been constructed for use at the FAIR facility in Darmstadt, Germany. This presentation will give an overview of the array and examples of its use in commissioning experiments at the RIKEN Nishina Center in Japan and the Argonne National Laboratory in the USA.