Triaxial superdeformation in {sup 40}Ar

Journal Article · Thu Jul 15 04:00:00 EDT 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.82.011302· OSTI ID:21389164

Taniguchi, Yasutaka; Ikeda, Kiyomi ^[1]; Kanada-En'yo, Yoshiko ^[2]; Kimura, Masaaki ^[3]; Horiuchi, Hisashi ^[4]; Ideguchi, Eiji ^[5]

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1. RIKEN Nishina Center for Accelerator-Based Science, RIKEN, Wako, Saitama 351-0198 (Japan)
2. Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto, Kyoto 606-8502 (Japan)
3. Creative Research Initiative 'Sousei', Hokkaido University, Sapporo, Hokkaido 001-0021 (Japan)
4. Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047 (Japan)
5. Center for Nuclear Study, University of Tokyo, Wako, Saitama 351-0198 (Japan)

Superdeformed (SD) states in {sup 40}Ar have been studied using the deformed-basis antisymmetrized molecular dynamics. Low-energy states were calculated by the parity and angular momentum projection and the generator coordinate method (GCM). Basis wave functions were obtained by the energy variation with a constraint on the quadrupole deformation parameter beta, while other quantities such as triaxiality gamma were optimized by the energy variation. By the GCM calculation, an SD band was obtained just above the ground-state band. The SD band involves a K{sup p}i=2{sup +} side band due to the triaxiality. The calculated electric quadrupole transition strengths of the SD band reproduce the experimental values appropriately. Triaxiality is significant for understanding low-lying states.

• OSTI ID: 21389164
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 1 Vol. 82; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
ARGON 40
ARGON ISOTOPES
CALCULATION METHODS
DEFORMATION
DEFORMED NUCLEI
E2-TRANSITIONS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
FUNCTIONS
GENERATOR-COORDINATE METHOD
GROUND STATES
ISOTOPES
LIGHT NUCLEI
MOLECULAR DYNAMICS METHOD
MULTIPOLE TRANSITIONS
NUCLEAR DEFORMATION
NUCLEI
PARITY
PARTICLE PROPERTIES
SIMULATION
STABLE ISOTOPES
SUPERDEFORMED NUCLEI
WAVE FUNCTIONS