Eur. Phys. J. A (2014) 50: 3
https://doi.org/10.1140/epja/i2014-14003-4

Regular Article - Theoretical Physics

Energy splitting of the states in the rotational bands in ⁴⁰Ca

Department of Nuclear Physics, Saint-Petersburg State University, 198504, St. Petersburg, Russia

^* e-mail: torilov@hotmail.com

Received: 8 August 2013
Revised: 18 November 2013
Accepted: 6 January 2014
Published online: 22 January 2014

Abstract

It is demonstrated that the local-potential alpha-cluster model for ⁴⁰Ca describes the basic properties of the low-lying positive-parity rotational band and the negative-parity band. The properties of the low-lying negative-parity band are interpreted in the framework of a one-dimensional model with octupole-vibration with axial symmetry. This simple model allows us to describe the spin dependence of the energy-parity splitting for the yrast band in ⁴⁰Ca. A good agreement with experimental data is observed.