^(189)W衰变的新γ射线  

NEW GAMMA RAYS FROM THE^(189)W DECAY

作　　者：杨维凡[1] 赵之正[1] 牟万统[1] 李宗伟[1] 朱少飞[1] 谢秀君[1] 

机构地区：[1]中国科学院近代物理研究所

出　　处：《核化学与放射化学》1995年第4期241-244,共4页Journal of Nuclear and Radiochemistry

摘　　要：用１４ＭｅＶ中子辐照天然锇靶，发生￣（１９２）Ｏｓ（ｎ，α）￣（１８９）Ｗ反应。采用化学分离法分离钨，在ＨＰＧｅ探测器测得的钨样品的γ射线单谱中观察到了可归因于￣（１８９）Ｗ衰变的２２条γ射线。发现其中的１８条γ射线是未知的新γ射线。Radioactivities of￣(189)W are produced through an ￣(192)Os(n,α)￣(189)W reaction. The ￣(nat)Os targetsare irradiated with 14MeV neutrons. Gamma ray spectroscopy from the chemically separatedtungsten sources using an HPGe detector has revealed the presence of twenty-two gamma rayswhich can be assigned to the decay of￣(189)W. Eighteen of them are new gamma rays which havenever been reported before.

关 键 词：^(189)W Γ射线 衰变曲线 化学分离 

分 类 号：O615.3[理学—无机化学]