Charge-exchange modes of excitation in deformed neutron-rich nuclei

Journal Article · Thu Oct 15 04:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4932281· OSTI ID:22492476

Yoshida, Kenichi ^[1]

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1. 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, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1681; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
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