双奇核^(188)Au的准粒子带结构研究  

Study of Quasiparticles Bands in Odd-Odd ^(188)Au

作　　者：方永得[1] 张玉虎[1] M.Oshima Y.Toh 周小红[1] M.Koizumi A.Osa A.Kimura Y.Hatsukawa T.Morikawa M.Nakamura M.Sugawara H.Kusakari 

机构地区：[1]中国科学院近代物理研究所 [2]Japan Atomic Energy Research Institute,Tokai,Ibaraki 319-1195,Japan [3]Department of Physics,Kyushu University,Fukuoka 812-81,Japan [4]Chiba Institute of Technology,Narashino,Chiba 275-0023,Japan [5]Chiba University,Inage-ku,Chiba 263-8512,Japan

出　　处：《高能物理与核物理》2006年第2期99-104,共6页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金(10375077;10221003)国家重点基础研究发展规划项目(G2000077400)中国科学院基金资助~~

摘　　要：利用在束γ谱学实验技术,通过173Yb(19F,4nγ)反应布居了188Au的高自旋态,并对其准粒子带结构进行了研究．基于实验测量结果,对原有的双奇核188Au能级纲图做了较大的修改．通过系统性比较,对15+以上的能级结构进行了讨论．High-spin level structure of ^188Au has been studied via the ^173Yb（^19F, 4nγ） reaction using techniques of in-beam γ-ray spectroscopy. Based on the experimental results, the level scheme of ^188Au has been revised significantly. The previously reported positive parity levels have been modified and a new 20^＋ level was proposed to feed the 18^＋ states via two low-energy transitions. The existence of the 20^＋ and the level structures above it are similar to those in the neighboring odd-odd ^190,192Au, therefore, the πh11/2^-1×vi13/2^02 h9/2^-1 configuration was assigned to the 20^＋ state.

关 键 词：在束Γ谱学 双奇核^188Au 高自旋态 γ形变 

分 类 号：O571.21[理学—粒子物理与原子核物理] TQ174.1[理学—物理]