Symmetries in mirror nuclei 31S and 31P

D. Tonev; G. de Angelis; N. Goutev; S. Iliev; R. Orlandi; I. Deloncle; A. Demerdjiev; A. Gadea; E. Geleva; C. He; H. Laftchiev; S. Lunardi; N. Marginean; A. Nikolov; P. Pavlov; I.L. Pantaleev; H. Penttilä; F. Recchia; E. Sahin; R.P. Singh; B. Slavchev; H.–F. Wirth; M.S. Yavahchova

doi:10.1051/epjconf/201819403001

All issues

Volume 194 (2018)

EPJ Web Conf., 194 (2018) 03001

Abstract

Open Access

Issue		EPJ Web Conf. Volume 194, 2018 International Conference on Nuclear Structure and Related Topics (NSRT18)


Article Number		03001
Number of page(s)		5
Section		Nuclear spectroscopy
DOI		https://doi.org/10.1051/epjconf/201819403001
Published online		14 November 2018

EPJ Web of Conferences 194, 03001 (2018)
https://doi.org/10.1051/epjconf/201819403001

Symmetries in mirror nuclei ³¹S and ³¹P

D. Tonev¹^*, G. de Angelis², N. Goutev¹, S. Iliev¹, R. Orlandi², I. Deloncle³, A. Demerdjiev¹, A. Gadea², E. Geleva¹, C. He⁴, H. Laftchiev¹, S. Lunardi⁵, N. Marginean², A. Nikolov¹, P. Pavlov¹, I.L. Pantaleev¹, H. Penttilä⁶, F. Recchia⁵, E. Sahin², R.P. Singh⁷, B. Slavchev¹, H.–F. Wirth⁸ and M.S. Yavahchova¹

¹ Instittute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Tzarigradsko chaussee 72 Blvd. BG-1784, Sofia, Bulgaria
² INFN, Laboratori Nazionali di Legnaro, Legnaro, Italy
³ CSNSM, CNRS and Université Paris-Sud XI, 91405 Orsay Campus, France
⁴ Department of Nuclear Physics, CIAE, Beijing, P.R. China
⁵ Dipartimento di Fisica and INFN Padova, Padova, Italy
⁶ University of Jyväskylä, Jyväskylä, Finland
⁷ Inter-university Accelerator Centre, New Delhi, India
⁸ Ludwig-Maximilians Universität München, Germany

^* e-mail: Dimitar.Tonev@inrne.bas.bg

Published online: 14 November 2018

Abstract

Excited states in mirror nuclei ³¹S and ³¹P were populated in the 1n and 1p exit channels, respectively, of the reaction ²⁰Ne + ¹²C. The beam of ²⁰Ne, with an energy of 33 MeV, was delivered for the first time by the Piave-Alpi accelerator of the Laboratori Nazionali di Legnaro. Angular correlations of coincident pairs and Doppler-shift attenuation lifetime measurements in ³¹S and ³¹P were performed using the multidetector array GASP in conjunction with the EUCLIDES charged particle detector. A comparison of the determined B(E1) strengths of the analog mirror 7/2^- → 5/2⁺ transitions indicates the presence of a violation of isospin symmetry.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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