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新丰中子同位素:¹⁸⁶Hf

A New Neu tron-rich Isotope:186Hf.

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【作者】杨维凡；袁双贵；李宗伟；何建军；马桃桃；方克明；沈水法；甘再国；潘强岩；牟万统；苏登贵；陈展图；郭天瑞；郭俊盛；刘洪业；石立军；赵之正；马惠芳；

【Author】 Yang Weifan Yuan Shuanggui Li Zongwei He Jianjun Ma Taotao Fang Keming Shen Shuifa Gan Zajguo Pan Qiangyan Mou Wantong Su Denggui Chen Zhantu Guo Tianrui Guo Junsheng Liu Hongye Shi Lijun Zhao Zhizheng Ma Huifang (Institute of Modern physics, the Chinese

【机构】中国科学院近代物理研究所；

【摘要】在兰州重离子加速器（ＦＤＵＬ）上，用６０ＭｅＶ／μ１８Ｏ离子轰击厚天然钨靶，通过多核子转移反应产生１８６Ｈｆ。使用放射化学分离技术从钨和反应产物混和物中分离出铪，并由ＨＰＧｅ探测器测量铪样品的活性．观测到了１８６Ｈｆ的子体１８６Ｔａ的７３７，５ｋｅＶＹ射线的增长、衰变行为，结果表明，本实验首次合成并鉴别了新丰中子同位素１８６Ｈｆ，测得它的半衰期为（２．６±１．２）ｍｉｎ。更多还原

【Abstract】 The radioactive nuclide 186Hf has been produced via multinucleon transfer reaction by 60 MeV / u 18 O ion irradiation of the natural tungsten. The radiochemical separation was performed to isolate the hafnium from tungsten and the complex mixture of the reaction products. The activity of the hafnium was measured using a HPGe detector The new neutron-rich isotope 186Hf has been identified for the first time by measuring the growth and decay of the 737.5keV - ray from its daughter 186Ta. The half-life of186Hf was determined to be (2.6±1.2) min.更多还原