通过重离子熔合蒸发反应116Cd（27Al,4n）布居了139Pm的高自旋激发态,用12台高纯锗探测器（HpGe）阵列进行了在束γ-γ符合测量。基于γ-γ符合关系及139Pm核已知的能级信息,建立了两条ΔI=1的负宇称带。利用相邻核能级结构的系统性和依据半经典的核子-核子有效作用的理论模型（SPAC）对这两条带能级结构进行了定量计算,认为它们属于磁转动带。
High-spin states in 139Pm have been studied via the 116Cd（27Al,4n） heavy-ion fusion-evaporation reaction.The γ-γ coincidences were measured with 12 HpGe detectors.Based on γ-γ coincidence relationships and previously known levels in 139Pm,two ΔI=1 negative-parity bands have been established.From the systematic comparison with the neighbouring nuclei and semi-classical effective interaction model（SPAC） calculations,the two bands were suggested as magnetic rotational bands.
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