Application of the multiphonon method to the study of the vibrational states with K = 0 in heavy deformed nuclei

Journal Article · Wed Jun 01 04:00:00 EDT 1988 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.37.2779· OSTI ID:5261224

Leandri, J; Piepenbring, R

The multiphonon method based on K/sup ..pi../ = 0/sup -/ and K/sup ..pi../ = 0/sup +/ phonons is applied to heavy mass deformed even nuclei, such as Th, U, and Pu isotopes. Special emphasis is put on the location and properties of the ''two phonon'' states. Relative to an harmonic situation, the calculated energy spectra are systematically dilated. The octupole vibrations with K/sup ..pi../ = 0/sup -/ present larger anharmonicities than the vibrations K/sup ..pi../ = 0/sup +/ which, in these nuclei, are found to be mainly of pairing nature. The two modes appear to be weakly coupled. The ''two phonon'' states are predicted to have an energy of about 1.7 to 2.0 MeV and keep some collective character through their electromagnetic transitions to the ''one phonon'' states. These conclusions are at variance with those of the quasiparticle phonon nuclear model of Soloviev et al.

• Research Organization: Institut des Sciences Nucleaires, 38026 Grenoble, France
• OSTI ID: 5261224
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 37:6; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653001* -- Nuclear Theory-- Nuclear Structure
Moments
Spin
& Models
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE ISOTOPES
ANGULAR MOMENTUM
COLLECTIVE MODEL
DEFORMED NUCLEI
ENERGY LEVELS
ENERGY SPECTRA
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FERMIONS
ISOTOPES
MATHEMATICAL MODELS
MATRIX ELEMENTS
NUCLEAR MODELS
NUCLEI
PARITY
PARTICLE PROPERTIES
PLUTONIUM ISOTOPES
QUASIPARTICLE-PHONON MODEL
RANDOM PHASE APPROXIMATION
SPECTRA
SPIN
TAMM-DANCOFF METHOD
THORIUM ISOTOPES
URANIUM ISOTOPES
VIBRATIONAL STATES