Low-energy dipole {gamma}-ray transition rates in even-even deformed nuclei

Journal Article · Sat Nov 01 04:00:00 EST 1997 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.56.2528· OSTI ID:545026

Soloviev, V G; Sushkov, A V; Shirikova, N Y ^[1]

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1. Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980 Dubna, Moscow region (Russia)

A study of low-lying magnetic and electric dipole excitations is carried out in {sup 166,168}Er, {sup 172,174}Yb, and {sup 178}Hf within the quasiparticle-phonon nuclear model with the wave functions consisting of one- and two-phonon terms. It is shown that computed M1 strength below 4 MeV in these nuclei is much stronger fragmented than in Gd and Dy isotopes in agreement with the relevant experimental observation. The scissors state is strongly fragmented and the overlapping between the scissors state and any 1{sup +} state is less than 0.1. The fragmentation of the one-phonon 1{sup +} states, as a rule, is stronger than the fragmentation of the one-phonon states with K{sup {pi}}=0{sup {minus}} and 1{sup {minus}}. The resulting M1 and E1 spectra are compared with available experimental data. The calculated M1 and E1 strengths summed in the energy range 2{endash}4 MeV are in agreement with the relevant experimental data. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 545026
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 5 Vol. 56; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
DEFORMED NUCLEI
DYSPROSIUM ISOTOPES
E1-TRANSITIONS
ERBIUM 166
ERBIUM 168
EVEN-EVEN NUCLEI
EXCITATION
FRAGMENTATION
GADOLINIUM ISOTOPES
HAFNIUM 178
M1-TRANSITIONS
QUASIPARTICLE-PHONON MODEL
WAVE FUNCTIONS
YTTERBIUM 172
YTTERBIUM 174