Shape coexistence and phase transitions in the platinum isotopes

Journal Article · Fri Aug 15 00:00:00 EDT 2008 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.78.024303· OSTI ID:21192101

Morales, Irving O; Frank, Alejandro; Vargas, Carlos E; Isacker, P Van ^[1]

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1. Instituto de Ciencias Nucleares, UNAM, Apdo. Postal 70-543, 04510 Mexico, D.F. (Mexico)

The matrix coherent-state approach of the interacting boson model with configuration mixing is used to study the geometry of the platinum isotopes. With a parameter set determined in previous studies, it is found that the absolute minimum of the potential for the Pt isotopes evolves from spherical to oblate and finally to prolate shapes when the neutron number decreases from N=126 (semi-magic) to N=104 (mid-shell). Shape coexistence is found in the isotopes {sup 182,184,186,188}Pt. A phase diagram is constructed that shows the coexistence region as a function of the number of bosons and the strength of the mixing parameter.

• OSTI ID: 21192101
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 78, Issue 2; Other Information: DOI: 10.1103/PhysRevC.78.024303; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANNIHILATION OPERATORS
BOSONS
CONFIGURATION MIXING
EIGENSTATES
INTERACTING BOSON MODEL
MIXING
NEUTRONS
PHASE DIAGRAMS
PHASE TRANSFORMATIONS
PLATINUM 182
PLATINUM 184
PLATINUM 186
PLATINUM 188
PLATINUM ISOTOPES
POTENTIALS
SHELLS
SPHERICAL CONFIGURATION