Discovery of 60Ca and Implications For the Stability of 70Ca
Discovery of 60Ca and Implications For the Stability of 70Ca
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60Ca 的发现及其对 70Ca 稳定性的影响
DOI：
10.1103/physrevlett.121.022501
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
N.Iwasa他
中科院分区：
文献类型：
--
作者：
O.B. Tarasov;N.Iwasa他
在日本理化学研究所西名中心放射性离子束工厂对靶进行的射弹束碎裂实验中，发现了重要的丰中子核和其他7个接近核稳定极限的核。使用BigRIPS两级飞行中分离器对产生的碎片进行分析和明确鉴定。新发现的八个富中子核，、和，是各自元素中最富中子的同位素。此外，还登记了1起符合的事件。的结果进行了比较与滴水线预测的各种质量模型，它被发现，最好的协议与观察到的极限存在的探索区域的模型往往预测均匀质量的钙同位素被绑定到至少。
The discovery of the important neutron-rich nucleusand seven others near the limits of nuclear stability is reported from the fragmentation of aprojectile beam ontargets at the radioactive ion-beam factory of the RIKEN Nishina Center. The produced fragments were analyzed and unambiguously identified using the BigRIPS two-stage in-flight separator. The eight new neutron-rich nuclei discovered,,,,,,, and, are the most neutron-rich isotopes of the respective elements. In addition, one event consistent withwas registered. The results are compared with the drip lines predicted by a variety of mass models and it is found that the models in best agreement with the observed limits of existence in the explored region tend to predict the even-mass Ca isotopes to be bound out to at least.