Shape and superdeformed structure in Hg isotopes in relativistic mean field model

Journal Article · Sat Oct 01 04:00:00 EDT 1994 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.50.1924· OSTI ID:6962313

Patra, S K; Yoshida, S; Takigawa, N ^[1]; Praharaj, C R ^[2]

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1. Department of Physics, Faculty of Science, Tohoku University, 980-77 Sendai (Japan)
2. Institute of Physics, Bhubaneswar-751 005 (India)

Various shapes of Hg isotopes are calculated using a relativistic mean field theory. We observe shape transitions from oblate to prolate and prolate to oblate at [ital A]=178 and [ital A]=188, respectively. Both in the oblate and in the prolate solutions the sign of the hexadecupole moment changes from positive to negative values with increasing mass number. The predicted shape of the ground state agrees with the available data contrary to nonrelativistic calculations for neutron deficient isotopes. A low-lying superdeformed configuration is found in some isotopes, and found to be the ground state for [sup 180]Hg. A possible discrepancy between the experimental data of the quadrupole deformation and those of the charge radii is pointed out.

• OSTI ID: 6962313
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 50:4; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663110 -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)
663120* -- Nuclear Structure Models & Methods-- (1992-)
663570 -- Nuclear Mass Ranges-- A=150-189-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CALCULATION METHODS
CHARGE DISTRIBUTION
COLLECTIVE EXCITATIONS
DEFORMATION
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION
ISOTOPES
MEAN-FIELD THEORY
MERCURY ISOTOPES
MOMENTS METHOD
NUCLEAR DEFORMATION
RELATIVISTIC RANGE