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Damping mechanisms of high-lying single-particle states in $^{91}$Nb

Abstract : Decay by proton emission from high-lying states in 91Nb, populated in the 90Zr(alpha,t) reaction at Ealpha=180 MeV, has been investigated. Decay to the ground state and semidirect decay to the low-lying (2+,5-, and 3-) phonon states in 90Zr were observed. It was found that these phonon states play an important role in the damping process of the single-particle states. An optical-model coupled-channel approach was used successfully to describe the direct and semidirect parts of the decay.
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http://hal.in2p3.fr/in2p3-00134773
Contributor : Dominique Girod <>
Submitted on : Monday, March 5, 2007 - 1:41:57 PM
Last modification on : Wednesday, September 16, 2020 - 4:07:56 PM

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H.K.T. van der Molen, H. Akimune, A.M. van den Berg, I. Daito, H. Fujimura, et al.. Damping mechanisms of high-lying single-particle states in $^{91}$Nb. Physical Review C, American Physical Society, 2007, 75, pp.014311. ⟨10.1103/PhysRevC.75.014311⟩. ⟨in2p3-00134773⟩

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