Observation of 186mTa

Unreported tantalum isomer 18mTa has been produced through the reaction 186W(n,p) by irradiation of natW with 14 MeV neutrons. The activity of 186Ta and 186Ta was measured using HPGe detectors and several X-γ as well as γ-γ coincidence arrangements. The 186mTa has been identified by means of measuring known γ rays from 186Ta p-decay. The half-life of 186mTa has been determined to be (1.5±0.1) min.

作 者： XU Yan-Bing DING Hua-Jie ZHANG Sheng-Dong YUAN Shuang-Gui YANG Wei-Fan LU Xi-Ting WANG Xian-Yi ZHAO Li-Min WANG Ping-Zhi LI Heng-Yuan   作者單位： XU Yan-Bing,DING Hua-Jie,YUAN Shuang-Gui,YANG Wei-Fan,WANG Xian-Yi,ZHAO Li-Min,WANG Ping-Zhi,LI Heng-Yuan(Institute of Modern Physics,the Chinese Academy of Sciences,Lanzhou 730000,China)

ZHANG Sheng-Dong(China Institute of Atomic Energy,Beijing 102413,China)

LU Xi-Ting(School of Physics,Peking University,Beijing 100871,China) 

刊 名： 核技術(shù)（英文版）  SCI 英文刊名： NUCLEAR SCIENCE AND TECHNIQUES  年，卷(期)： 2006 17(1)  分類號： O57  關(guān)鍵詞： 186mTa   Neutron reaction   γ(X)-γ coincidence   β-decay