Eur. Phys. J. A (2016) 52: 300
https://doi.org/10.1140/epja/i2016-16300-2

Regular Article - Theoretical Physics

Enhancement of octupole strength in near spherical nuclei

Dep. Física Teórica, Facultad de Ciencias, Universidad Autónoma de Madrid, E-28049, Madrid, Spain

^* e-mail: luis.robledo@uam.es

Received: 1 June 2016
Accepted: 29 August 2016
Published online: 29 September 2016

Abstract

The validity of the rotational formula used to compute E1 and E3 transition strengths in even-even nuclei is analyzed within the Generator Coordinate Method framework based on mean field wave functions. It turns out that those nuclei with spherical or near spherical shapes the E1 and E3 strengths computed with this formula are strongly underestimated and a sound evaluation of them requires angular-momentum projected wave functions. Results for several isotopic chains with proton number equal to or near magic numbers are analyzed and compared with experimental data. The use of angular-momentum projected wave functions greatly improves the agreement with the scarce experimental data.