Impact of the phonon coupling on the radiative neutron capture

Journal Article · Thu Jul 15 00:00:00 EDT 2010 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778810070057· OSTI ID:21426703

Avdeenkov, A V ^[1]; Goriely, S ^[2]; Kamerdzhiev, S P ^[3]

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1. Stellenbosch Institute of Advanced Study, National Institute for Theoretical Physics (South Africa)
2. Institute d'Astronomie et d'Astrophysique (Belgium)
3. Institute of Physics and Power Engineering (Russian Federation)

Inclusion of the coupling of quasiparticle degrees of freedom with phonon degrees is a natural extention of the standard QRPA approach. The paper presents the quantitative impact of this phonon coupling on the dipole strength and radiative neutron capture for the stable {sup 124}Sn and very exotic {sup 150}Sn isotopes, as an illustration, using the self-consistent version of the Extended Theory of Finite Fermi Systems. It was found that the phonon contribution to the pygmy-dipole resonance and radiative neutron capture cross section is increased with the (N - Z) difference growth. The results show that the self-consistent nuclear structure calculations are important for unstable nuclei, where phenomenological approaches do not work.

• OSTI ID: 21426703
• Journal Information: Physics of Atomic Nuclei, Vol. 73, Issue 7; Other Information: DOI: 10.1134/S1063778810070057; Copyright (c) 2010 Pleiades Publishing, Ltd.; ISSN 1063-7788
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CAPTURE
CROSS SECTIONS
DEGREES OF FREEDOM
NEUTRON REACTIONS
NUCLEAR STRUCTURE
PHONONS
RESONANCE
TIN 124
BARYON REACTIONS
EVEN-EVEN NUCLEI
HADRON REACTIONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
QUASI PARTICLES
STABLE ISOTOPES
TIN ISOTOPES