Charge-exchange modes of excitation in deformed neutron-rich nuclei
- Graduate School of Science and Technology, Niigata University, Niigata 950-2181 (Japan)
Gamow-Teller (GT) mode of excitation and β-decay properties of deformed neutron-rich even-N Zr isotopes are investigated in a self-consistent Skyrme energy-density-functional approach, in which the Hartree-Fock-Bogoliubov equation is solved in the coordinate space and the proton-neutron Quasiparticle-RPA equation is solved in the quasiparticle basis. It is found that a stronger collectivity is generated for the GT giant resonance as an increase in the neutron number. Furthermore, we find that the T = 0 pairing enhances the low-lying GT strengths cooperatively with the T = 1 pairing correlation depending on the microscopic structure of the low-lying mode and the shell structure around the Fermi levels, and that the enhanced strength shortens the β-decay half-lives by at most an order of magnitude.
- OSTI ID:
- 22492476
- Journal Information:
- AIP Conference Proceedings, Vol. 1681, Issue 1; Conference: Nuclear Structure and Dynamics '15: 3. international nuclear physics conference on nuclear structure and dynamics, Portoroz (Slovenia), 14-19 Jun 2015; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BETA DECAY
CHARGE EXCHANGE
DEFORMED NUCLEI
EVEN-EVEN NUCLEI
EXCITATION
FERMI LEVEL
GAMOW-TELLER RULES
GIANT RESONANCE
HARTREE-FOCK-BOGOLYUBOV THEORY
NEUTRON-RICH ISOTOPES
NEUTRONS
PROTONS
QUASI PARTICLES
RANDOM PHASE APPROXIMATION
SKYRME POTENTIAL
ZIRCONIUM ISOTOPES