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.

Metadata

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.

© 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: