Effects of phonon-phonon coupling on properties of pygmy resonance in 124-132Sn

Publisher: Edp Sciences

E-ISSN: 2100-014x|38|issue|17002-17002

ISSN: 2100-014x

Source: EPJ Web of Conference, Vol.38, Iss.issue, 2012-12, pp. : 17002-17002

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Abstract

Starting from an effective Skyrme interaction we study effects of phonon-phonon coupling on the low-energy electric dipole response in 124-132Sn. The QRPA calculations are performed within a finite rank separable approximation. The inclusion of two-phonon configurations gives a considerable contribution to low-lying strength. Comparison with available experimental data shows a reasonable agreement for the low-energy E1 strength distribution.