Beta-delayed proton emission from 20Mg

Abstract

Beta-delayed proton emission from 20 Mg has been measured at ISOLDE, CERN, with the ISOLDE Decay Station (IDS) setup including both charged-particle and gamma-ray detection capabilities. A total of 27 delayed proton branches were measured including seven so far unobserved. An updated decay scheme, including three new resonances above the proton separation energy in 20 Na and more precise resonance energies, is presented. Beta-decay feeding to two resonances above the Isobaric Analogue State (IAS) in 20 Na is observed. This may allow studies of the 4032.9(2.4)keV resonance in 19 Ne through the beta decay of 20 Mg, which is important for the astrophysically relevant reaction 15O( $ \alpha$ , $ \gamma$ )19Ne . Beta-delayed protons were used to obtain a more precise value for the half-life of 20 Mg, 91.4(1.0)ms.

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Item Type:	Article
Authors/Creators:	Lund, M. V. Andreyev, Andrei https://orcid.org/0000-0003-2828-0262 Borge, M. J. G. Cederkäll, J. De Witte, H. Fraile, L. M. Fynbo, H. O. U. Greenlees, P. T. Harkness-Brennan, L. J. Howard, A. M. Huyse, M. Jonson, B. Judson, D. S. Kirsebom, O. S. Konki, J. Kurcewicz, J. Lazarus, I. Lica, R. Lindberg, S. Madurga, M. Marginean, N. Marginean, R. Marroquin, I. Mihai, C. Munch, M. Nacher, E. Negret, A. Nilsson, T. Page, R. D. Pascu, S. Perea, A. Pucknell, V. Rahkila, P. Rapisarda, E. Riisager, K. Rotaru, F. Sotty, C. Stanoiu, M. Tengblad, O. Turturica, A. Van Duppen, P. Vedia, V. Wadsworth, R. https://orcid.org/0000-0002-4187-3102 Warr, N.
Copyright, Publisher and Additional Information:	© SIF, Springer-Verlag Berlin Heidelberg 2016. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.
Dates:	Accepted: 5 September 2016 Published: 4 October 2016
Institution:	The University of York
Academic Units:	The University of York > Faculty of Sciences (York) > Physics (York)
Funding Information:	Funder Grant number SCIENCE AND TECHNOLOGY FACILITIES COUNCIL (STFC) ST/L005727/1
Depositing User:	Pure (York)
Date Deposited:	29 Nov 2016 10:09
Last Modified:	10 Apr 2025 23:10
Published Version:	https://doi.org/10.1140/epja/i2016-16304-x
Status:	Published
Refereed:	Yes
Identification Number:	10.1140/epja/i2016-16304-x
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:108609

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Beta-delayed proton emission from 20Mg

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