Published October 2007 | Version v1
Journal article Metadata-only

Clustering and triaxial deformations of 40Ca

Creators

  • 1. Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan)
  • 2. Department of Physics, Kyoto University, Kyoto 606-8502 (Japan)
  • 3. Institute of Physics, University of Tsukuba, Tsukuba 305-8571 (Japan)
  • 4. Research Center of Nuclear Physics, Osaka University, Ibaraki 567-0047 (Japan)

Description

We have studied the positive-parity states of 40Ca using antisymmetrized molecular dynamics (AMD) and the generator coordinate method (GCM). Imposing two different kinds of constraints on the variational calculation, we have found various kinds of 40Ca structures such as a deformed-shell structure, as well as α-36Ar and 12C-28Si cluster structures. After the GCM calculation, we obtained a normal-deformed band and a superdeformed band together with their side bands associated with triaxial deformation. The calculated B(E2) values agreed well with empirical data. It was also found that the normal-deformed and superdeformed bands have non-negligible α-36Ar cluster and 12C-28Si cluster components, respectively. This leads to the presence of an α-36Ar higher nodal band occurring above the normal-deformed band

Additional details

Identifiers

DOI
10.1103/PhysRevC.76.044317;
arXiv
arXiv:0707.0723v1;

Publishing Information

Journal Title
Physical Review. C, Nuclear Physics
Journal Volume
76
Journal Issue
4
Journal Page Range
p. 044317-044317.10
ISSN
0556-2813
CODEN
PRVCAN

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
39081877
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Descriptors DEI
ARGON 36; CALCIUM 40; CARBON 12; CLUSTER MODEL; GENERATOR-COORDINATE METHOD; MOLECULAR DYNAMICS METHOD; NUCLEAR DEFORMATION; NUCLEAR STRUCTURE; PARITY; SHELL MODELS; SILICON 28; SUPERDEFORMED NUCLEI; VARIATIONAL METHODS
Descriptors DEC
ALKALINE EARTH ISOTOPES; ARGON ISOTOPES; CALCIUM ISOTOPES; CALCULATION METHODS; CARBON ISOTOPES; DEFORMATION; DEFORMED NUCLEI; EVEN-EVEN NUCLEI; ISOTOPES; LIGHT NUCLEI; MATHEMATICAL MODELS; NUCLEAR MODELS; NUCLEI; PARTICLE PROPERTIES; SILICON ISOTOPES; STABLE ISOTOPES

Optional Information

Notes
(c) 2007 The American Physical Society