Eur. Phys. J. A (2021) 57: 28
https://doi.org/10.1140/epja/s10050-020-00341-3

Regular Article – Experimental Physics

Detailed study of the decay of ${}^{32}$Ar

¹ Centre d’Etudes Nucléaires de Bordeaux Gradignan, UMR 5797 CNRS/IN2P3-Université de Bordeaux, 19 Chemin du Solarium, CS 10120, 33175, Gradignan Cedex, France
² Laboratoire SNIRM, Faculté de Physique, USTHB, B.P. 32, El Alia, 16111, Bab Ezzouar, Alger, Algeria
³ Instituto de Estructura de la Materia, CSIC, Serrano 113bis, 28006, Madrid, Spain
⁴ Department of Physics and Astronomy, and National Superconducting Cyclotron Laboratory, Michigan State University, 48824-1321, East Lansing, MI, USA
⁵ Grand Accélérateur National d’Ions Lourds, CEA/DRF-CNRS/IN2P3, B.P. 55027, 14076, Caen Cedex 05, France
⁶ Department of Physics and Astronomy, University of Aarhus, Ny Munkegade 1520, 8000, Aarhus C, Denmark
⁷ Laboratoire de Physique des 2 Infinis Irène Joliot-Curie-IJCLab, Bât. 100, 15 rue Georges Clémenceau, 91405, Orsay Cedex, France
⁸ Gesellschaft für Schwerionenforschung mbH, Planckstrasse 1, 64291, Darmstadt, Germany

^a blank@cenbg.in2p3.fr

Received: 8 September 2020
Accepted: 29 December 2020
Published online: 14 January 2021

Abstract

In an experiment performed at the SPIRAL1 facility of GANIL, the $\beta$ decay of ${}^{32}$Ar has been studied by means of the “Silicon Cube” device associated with germanium clover detectors from the EXOGAM array. Beta-delayed protons and $\gamma$ rays have been observed and allowed the determination of all relevant decay branches. The Gamow–Teller strength distribution is compared to shell-model calculations and excellent agreement is found. The Fermi strength is inline with expectations. A quasi-complete decay scheme of ${}^{32}$Ar is established.