High spin states in 127 I were populated via 124 Sn( 7 Li, 4n γ ) fusion-evaporation reaction at E beam = 33 MeV. Level scheme of 127 I has been updated by placing new γ -rays and also by confirming the spin/parity of several energy levels. Two new levels at E x = 2628 and 3199 keV have been identified which are found to decay into the negative parity πh 11/2 band. These two states and two earlier reported states at 3502 and 3989 keV have been interpreted as the γ -vibrational states on the basis of their decay pattern. Two positive parity three-quasiparticle bands above I π = 23/2 + states at 2901 and 3060 keV have been identified to be a possible candidate of chiral band. A comparison in the isotopic and isotonic chains reveals the possible existence of γ -vibration and chiral rotation in 123–127 I.

中文翻译：

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123,125,127 I中的γ振动指示

在E束= 33 MeV下，通过124 Sn（7 Li，4nγ）熔融-蒸发反应填充了127 I中的高自旋态。通过放置新的γ射线并确认几个能级的自旋/奇偶性，对127 I的能级方案进行了更新。已经确定了在E x = 2628和3199 keV处的两个新电平，它们被发现衰减到负奇偶校验πh11/2波段。根据这两种状态以及在3502和3989 keV处的两个较早报告的状态，已根据其衰减模式将其解释为γ振动状态。已经确定在2901和3060 keV处高于π= 23/2 +态的两个正奇偶性三准粒子带可能是手性带的候选者。同位素和等渗链的比较表明，在123–127 I中可能存在γ振动和手性旋转。