Effect of a two-phonon admixture on the M1 resonance in spherical nuclei

Journal Article · Mon Oct 01 00:00:00 EDT 1979 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:5361606

Vdovin, A I; Voronov, V V; Ponomarev, V Y; Stoyanov, C

The effect of a two-phonon admixture on the properties of the M1 resonance in spherical nuclei is studied for the mass-number range 60< or =A< or =140. The calculations are based on the quasiparticle--phonon model with factorized multipole and spin--multipole forces. The two-phonon admixture is of minor importance in nuclei with 50 and 82 neutrons; in the other nuclei, especially in those with well expressed pairing in both the proton and neutron systems, this admixture is impotant. The radiative strength functions at the neutron binding energy are calculated. The results are compared with experimental data and calculations by other workers.

• Research Organization: Joint Institute for Nuclear Research
• OSTI ID: 5361606
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 30:4; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

653001* -- Nuclear Theory-- Nuclear Structure
Moments
Spin
&amp; Models
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
FUNCTIONS
GIANT RESONANCE
INTERMEDIATE MASS NUCLEI
MATHEMATICAL MODELS
NUCLEAR MODELS
NUCLEI
PHONONS
QUASI PARTICLES
RESONANCE
SPHERICAL MODEL
STRENGTH FUNCTIONS