First observation of high spin states in 90 Tc
European Physical Journal A(1993)
Abstract
High spin states in90Tc have been studied via the58Ni (35Cl, 2pn)90Tc reaction at beam energy of 124 MeV. Twenty-six newγ-rays were observed, a new level scheme was established and spins were assigned. Two band-like structures were established up to about 20ħ with an excitation energy of 6–7 MeV. The band (B) shows collective characteristic at high spin. We suggest it to be of a quasi-particle configurationπg9/2⊗vf5/2.
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Key words
23.20.Lv, 25.70.−z, 27.60.+j
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