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利用 450MeV的82 Se束流轰击139La靶 ,通过核子转移反应产生了136 Ba ,用在束γ谱学方法测量了其激发态的γ衰变 ,观测到了它的 1 0 +态同质异能态并得到该同质异能态的寿命为 94ns.
The 139 La target was bombarded with a 450 MeV 82 Se beam, and 136 Ba was produced by the nuclear transfer reaction. The γ decay of the excited state was measured by means of beam γ spectroscopy and its 1 0 + state isomorphism was observed. The lifetime of this isomorphism is 94 ns.