Microscopic analysis of the octupole phase transition in Th isotopes (CROSBI ID 194898)
Prilog u časopisu | kratko priopćenje | međunarodna recenzija
Podaci o odgovornosti
Nomura, Kosuke ; Vretenar, Dario ; Lu, Bing-nan
engleski
Microscopic analysis of the octupole phase transition in Th isotopes
A shape phase transition between stable octupole deformation and octupole vibrations in Th nuclei is analyzed in a microscopic framework based on nuclear density functional theory. The relativistic density dependent point coupling (DD-PC1) functional is used to calculate axially symmetric quadrupole-octupole constrained energy surfaces. Observables related to order parameters are computed using an interacting-boson Hamiltonian, with parameters determined by mapping the microscopic energy surfaces to the expectation value of the Hamiltonian in the boson condensate. The systematics of constrained energy surfaces and low-energy excitation spectra point to the occurrence of a phase transition between octupole-deformed shapes and shapes characterized by octupole-soft potentials.
octupole phase transition; Interacting boson-fermion model; actinides
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Podaci o izdanju
88 (2)
2013.
021303-1-021303-5
objavljeno
0556-2813
10.1103/PhysRevC.88.021303