Beta-delayed proton emission from$^{20}$Mg

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 schem...

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Detalles Bibliográficos
Autores principales: Andreyev, A, 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, Warr, N
Lenguaje:eng
Publicado: 2016
Materias:
Nuclear Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1140/epja/i2016-16304-x
http://cds.cern.ch/record/2244868
Descripción
Sumario: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$^{15}$O( $ \alpha$ , $ \gamma$ )$^{19}$Ne . 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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