摘要
通过130 Te(14 N ,4n)反应首次对双奇核14 0 Pr进行了在束γ谱学研究 .在实验中进行了γ射线的激发函数、γ射线单谱和γ γ t符合测量 .建立了激发能达 4 717.3keV的14 0 Pr的能级纲图 ,其中包括新发现的 4 2条γ射线和新建立的 2 7个能级 .基于实验测量的γ跃迁各向异性度 ,建议了14 0 Pr部分能级的自旋值 .根据14 0 Pr附近同位素核结构的系统性 ,对部分能级的准粒子组态作了定性的讨论 .
High spin level structure of doubly odd nucleus 140 Pr has been investigated using in beam γ spectroscopy techniques by means of the 130 Te( 14 N,4n) 140 Pr reaction at beam energy of 58MeV.γ ray excitation functions,γ ray singles and γ γ t coincidences were measured experimentally.The level scheme of 140 Pr,including 27 new levels and 42 new γ rays,was established for the first time up to 4717.3keV in excitation energy.Based on the measured γ ray anisotropies,spin values were suggested to the levels in 140 Pr.Several quasiparticle configurations are discussed on the basis of systematics in the neighboring odd odd nuclei,and interpreted qualitatively.
出处
《高能物理与核物理》
CSCD
北大核心
2004年第8期806-809,共4页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金(10 0 75 0 62
10 2 75081
10 0 2 5 5 2 5
10 2 2 10 0 3 )
国家重点基础研究发展规划(TG2 0 0 0 0 7740 0 )
中国科学院资助~~
