利用深部非弹反应对Z≈56,N≈80区核激发态的探索性研究

• 作 者: 刘忠 M.Oshima T.Ishii T.Hayakawa Y.Toh Y.Hatsukawa H.Sakurai M.Notani M.Ishihara
• 机 构: 中国科学院近代物理研究所!兰州730000,Japan Atomic Energy Research Institute(JAERI)!Tokai,Ibaraki319-1195,Japan,Japa
• 出 处: 高能物理与核物理
• 发表日期: 2001年09期
• 关键词: 深部非弹反应 丰中子核 高自旋态

通过 4 1 0MeV82 Se轰击天然Ba靶引起的深部非弹反应布居产生了类弹和类靶余核的激发态 ,利用在束γ谱学方法测量了它们的退激γ .通过γ -γ符合测量估计了类弹、类靶余核激发态的产生截面 ,在多个类靶余核中观测到了新γ跃迁 ,并建立了136 Ba的新能级纲图 ,说明利用深部非弹反应研究Z≈ 56,N≈ 80区高自旋态是有效、可行的

The deep non-bomb reaction population caused by bombardment of natural Ba targets by 4 1 0MeV82 Se generated the quasi-elastic and quasi-target nuclear excited states, and their degeneracy γ was measured by the beam γ-spectroscopy method. The generation cross section of the quasi- and target-like nuclear excited states was estimated and measured. A new gamma transition was observed in a number of target nuclei. A new 136Cb level map was established, which shows that using the deep non-bomb reaction Z ≈ 56, N ≈ 80 high spin state is valid and feasible