Damping mechanisms of high-lying single-particle states in Nb-91

H.K.T. van der Molen, H. Akimune, A.M. van den Berg, I. Daito, H. Fujimura, Y. Fujita, M. Fujiwara, M.N. Harakeh, M.D. Hunyadi, F. Ihara, T. Inomata, K. Ishibashi, J. Jänecke, N. Kalantar-Nayestanaki, H. Laurent, I. Lhenry, W. O'Donnell, V.A. Rodin, A. Tamii, H. ToyokawaM.H. Urin, H. Yoshida, M. Yosoi

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Abstract

Decay by proton emission from high-lying states in Nb-91, populated in the Zr-90(alpha,t) reaction at E-alpha=180 MeV, has been investigated. Decay to the ground state and semidirect decay to the low-lying (2(+),5(-), and 3(-)) phonon states in Zr-90 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.

Original languageEnglish
Article number014311
Number of pages13
JournalPhysical Review C
Volume75
Issue number1
DOIs
Publication statusPublished - Jan-2007

Keywords

  • OPTICAL-MODEL ANALYSIS
  • NEAR-MAGIC NUCLEI
  • MAGNETIC SPECTROMETER
  • ANALOG STATES
  • ENERGY-LEVELS
  • LIGHT-NUCLEI
  • DECAY MODES
  • MEAN-FIELD
  • LESS-THAN
  • SCATTERING

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