# How to determine the shape of nuclear molecules with polarized gamma-rays

### Submission summary

 As Contributors: Lorenzo Fortunato Arxiv Link: https://arxiv.org/abs/1910.04498v2 (pdf) Date accepted: 2019-11-22 Date submitted: 2019-11-18 Submitted by: Fortunato, Lorenzo Submitted to: SciPost Physics Proceedings Proceedings issue: 24th European Few Body Conference (University of Surrey, U.K.) Discipline: Physics Subject area: Quantum Physics Approach: Theoretical

### Abstract

A method has been recently proposed to establish the geometry of the alpha-cluster arrangement in $^{12}$C making use of polarized gamma-rays. The ratio of intensities of scattered radiation at 90 degrees along and perpendicular to the initial direction of the electric field vector, called depolarization ratio, is a key quantity that allows to underpin the nature of totally symmetric modes of vibrations. This allows to connect with the underlying point-group structure and therefore to the geometric shape of the nuclear molecule. This method is reviewed for $^{12}$C and extended to other configurations, such as three unequal clusters and four identical clusters (e.g. $^{16}$O).

Published as SciPost Phys. Proc. 3, 035 (2020)

### List of changes

Added one paragraph in Sect.2 with references 6-12.

### Submission & Refereeing History

Resubmission 1910.04498v2 on 18 November 2019
Submission 1910.04498v1 on 11 October 2019