Evidence of shell effects in the excitation function of 0.136-MeV isomeric state populated in the {sup 93}Nb(n,2n){sup 92}Nb{sup m} reaction
Journal Article
·
· Physical Review. C, Nuclear Physics
- Pakistan Institute of Engineering and Applied Sciences, Nilore, Islamabad (Pakistan)
Calculation for the excitation function of 0.136-MeV (2{sup +}) isomeric state in {sup 92}Nb has been carried out using Hauser-Feshbach and pre-equilibrium nuclear reaction models in 10-20 MeV energy range. A satisfactory agreement between the calculation and measurements requires the suppression of contribution from the negative-parity doublet consisting of the 0.226-MeV (2{sup -}) and 0.390-MeV (3{sup -}) states in {sup 92}Nb. This can be explained on the basis of highly retarded gamma transitions of higher energy states to the negative-parity doublet on account of its different shell model configuration compared to the shell model configuration of positive-parity states.
- OSTI ID:
- 20695523
- Journal Information:
- Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 70; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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