High-spin states and shell structure of the odd-odd nucleus {sup 90}Nb
- China Institute of Atomic Energy, Beijing 102413 (China)
- Institute of Modern Physics, Lanzhou 730000 (China)
- Universite de Douala, Faculte de Sciences, B.P. 8580 (Cameroon)
- College of Physics, Jilin University, Changchun 130021 (China)
The high-spin states of the odd-odd nucleus {sup 90}Nb have been investigated with in-beam {gamma}-spectroscopic techniques via the {sup 76}Ge({sup 19}F,5n){sup 90}Nb reaction at a beam energy of 80 MeV. {gamma}-{gamma} coincidences were measured using a {gamma}-ray detector array. Twenty new {gamma} rays have been assigned to {sup 90}Nb and the level scheme has been extended up to an excitation energy of 8.095 MeV at spin 18({Dirac_h}/2{pi}). The level structure of {sup 90}Nb at high spin states has been well reproduced using semiempirical shell-model calculations in the model space {pi}(1p{sub 1/2},0f{sub 5/2},0g{sub 9/2}){nu}(0g{sub 9/2}). The results show that the excitation of protons plays an important role in generating the high-spin states of {sup 90}Nb.
- OSTI ID:
- 20699068
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 72, Issue 4; Other Information: DOI: 10.1103/PhysRevC.72.044322; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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