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

Journal Article · Mon Jan 15 00:00:00 EST 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.75.014311· OSTI ID:20990950

Berg, A M. van den; Harakeh, M N; Hunyadi, M; Kalantar-Nayestanaki, N ^[1]; Akimune, H; Daito, I; Fujimura, H; Ihara, F; Inomata, T; Ishibashi, K; Yoshida, H; Yosoi, M ^[2]; Fujita, Y ^[3]; Fujiwara, M ^[2]; Jaenecke, J; O'Donnell, T W ^[4]; Laurent, H; Lhenry, I ^[5]; Rodin, V A ^[1]

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1. Kernfysisch Versneller Instituut (KVI), University of Groningen, 9747 AA Groningen (Netherlands)
2. Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047 (Japan)
3. Department of Physics, Osaka University, Toyonaka, Osaka 560-0043 (Japan)
4. Department of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040 (United States)
5. Institut de Physique Nucleaire, IN2P3-CNRS, F-91406 Orsay Cedex (France)

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

• OSTI ID: 20990950
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 75, Issue 1; Other Information: DOI: 10.1103/PhysRevC.75.014311; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COUPLED CHANNEL THEORY
DAMPING
DECAY
GROUND STATES
MEV RANGE 100-1000
NIOBIUM 91
OPTICAL MODELS
PARTICLES
PHONONS
PROTONS
ZIRCONIUM 90