a-decay study of 218Ac and 221Th in 40Ar+186W reaction

• 作者: Wei Hua Zhiyuan Zhang Long Ma Zaiguo Gan Huabin Yang Minghui Huang Chunli Yang Mingming Zhang Yulin Tian Xiaohong Zhou Cenxi Yuan Caiwan Shen Long Zhu
• 来源期刊: 中国物理C（英文版）
• 年，卷（期）: 2021,（4）
• 所属期刊栏目: NUCLEAR PHYSICS
• 页码范围: 242-247
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/1674-1137/abe0bd

摘要

In this study,218Ac and 221Th nuclides were produced via the heavy-ion induced fusion evaporation reaction 40Ar + 186W.Their decay properties were studied with the help of the gas-filled recoil spectrometer SHANS and a digital data acquisition system.The cross section ratio between 222pa and 218Ac was extracted experimentally,with measured value 0.69(9).Two new possible a decay branches to 221Th are suggested.The valence neutron configurations for the daughter 217Ra are discussed in terms of the hindrance factors.