Nilsson diagrams for light neutron-rich nuclei with weakly-bound neutrons
- Division of Mathematical Physics, Lund Institute of Technology at the University of Lund, Lund (Sweden) and Niels Bohr Institute, Blegdamsvej 17, Copenhagen, DK-2100 (Denmark)
Using Woods-Saxon potentials and the eigenphase formalism for one-particle resonances, one-particle bound and resonant levels for neutrons as a function of quadrupole deformation are presented, which are supposed to be useful for the interpretation of spectroscopic properties of some light neutron-rich nuclei with weakly bound neutrons. Compared with Nilsson diagrams in textbooks that are constructed using modified oscillator potentials, we point out a systematic change of the shell structure in connection with both weakly bound and resonant one-particle levels related to small orbital angular momenta l. Then, it is seen that weakly bound neutrons in nuclei such as {sup 15-19}C and {sup 33-37}Mg may prefer being deformed as a result of the Jahn-Teller effect, due to the near degeneracy of the 1d{sub 5/2}-2s{sub 1/2} levels and the 1f{sub 7/2}-2p{sub 3/2} levels in the spherical potential, respectively. Furthermore, the absence of some one-particle resonant levels compared with the Nilsson diagrams in textbooks is illustrated.
- OSTI ID:
- 21067900
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 76, Issue 5; Other Information: DOI: 10.1103/PhysRevC.76.054319; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
Similar Records
Positive-energy one-particle levels in quadrupole-deformed Woods-Saxon potentials
Neutron decay width of one-particle resonant levels in deformed nuclei