On E0 Transitions in even-even nuclei

TL;DR

This paper reviews recent experimental and theoretical advances in understanding E0 transitions between 0+ states in even-even nuclei, proposing a phenomenological model and discussing specific nuclear states in ^{160}Dy.

Contribution

It introduces a phenomenological model for estimating E0 transition matrix elements and discusses evidence for a specific 0+ state in ^{160}Dy.

Findings

New experimental data on 0+ states and E0 transitions

Proposed model for nuclear matrix element estimation

Evidence supporting a 681.3 keV state in ^{160}Dy

Abstract

The reanimation of the investigations dedicated to 0^{+} states energies and E0 transitions between them is provoked by new and more precise experimental techniques that not only made revision of the previous data but also gave a possibility to obtain a great amount of new 0^{+} states energies and conversion electrons data. We suggest one phenomenological model for estimation of the E0 transition nuclear matrix elements. Recently theoretical calculations [1] predicted existence of a 0^{+} state with energy 0.68 MeV in ^{160}Dy nucleus. Powerful enough arguments in favor of existence of 681.3 keV state in ^{160}Dy nucleus are presented.