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利用1 2 4 Sn( 7Li,4n) 1 2 7I反应研究了1 2 7I核的在束γ谱 ,建立了包括 2 5个新能级和 52条新γ射线构成的新能级纲图 .将基于πh1 1 2 粒子态 ( 1 1 2 - )的负宇称能级推高到 ( 3 5 2 - ) ,在较重的1 2 7I核中得到了退耦合能级结构 .由于在两个正宇称带ΔI=2能级系列中观测到了强的带间跃迁 ,建议此带的主要成分为g7 2质子的组态 .另外还观测到了两个正宇称ΔI=2和ΔI=1能级系列 ,它们可能基于πd5 2 的单准粒子带和一个 3准粒子带 .
In the γ-ray spectra of 1 2 7I nuclei, 1 2 4 Sn (7Li, 4n) 1 2 7I reaction was used to establish a new energy level framework including 25 new energy levels and 52 new γ-rays The decoupling energy level structure is obtained in the heavier 1 2 7I nuclei by pushing the negative parity level of the πh1 1 2 particle state (1 1 2 -) up to (3 5 2 -), The strong band-to-band transition was observed in the parity band ΔI = 2, suggesting that the band mainly consists of g7 2 protons. Two positive parity ΔI = 2 and ΔI = 1 levels were also observed Series, they may be based on the πd5 2 single quasi-particle band and a 3 quasiparticle band.