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Author(s)
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Andreyev, A (York U., England) ; Borge, M J G (Madrid, Inst. Estructura Materia ; CERN) ; Cederkäll, J (Lund U.) ; De Witte, H (Leuven U.) ; Fraile, L M (Madrid U.) ; Fynbo, H O U (Aarhus U.) ; Greenlees, P T (Helsinki Inst. of Phys. ; Jyvaskyla U.) ; Harkness-Brennan, L J (Liverpool U.) ; Howard, A M (Aarhus U.) ; Huyse, M (Leuven U.) ; Jonson, B (Chalmers U. Tech.) ; Judson, D S (Liverpool U.) ; Kirsebom, O S (Aarhus U.) ; Konki, J (Helsinki Inst. of Phys. ; Jyvaskyla U.) ; Kurcewicz, J (CERN) ; Lazarus, I (Daresbury) ; Lica, R (CERN ; Bucharest, IFIN-HH) ; Lindberg, S (Chalmers U. Tech.) ; Madurga, M (CERN) ; Marginean, N (Bucharest, IFIN-HH) ; Marginean, R (Bucharest, IFIN-HH) ; Marroquin, I (Madrid, Inst. Estructura Materia) ; Mihai, C (Bucharest, IFIN-HH) ; Munch, M (Aarhus U.) ; Nacher, E (Madrid, Inst. Estructura Materia) ; Negret, A (Bucharest, IFIN-HH) ; Nilsson, T (Chalmers U. Tech.) ; Page, R D (Liverpool U.) ; Pascu, S (Bucharest, IFIN-HH) ; Perea, A (Madrid, Inst. Estructura Materia) ; Pucknell, V (Daresbury) ; Rahkila, P (Helsinki Inst. of Phys. ; Jyvaskyla U.) ; Rapisarda, E (CERN) ; Riisager, K (Aarhus U.) ; Rotaru, F (Bucharest, IFIN-HH) ; Sotty, C (Leuven U. ; Bucharest, IFIN-HH) ; Stanoiu, M (Bucharest, IFIN-HH) ; Tengblad, O (Madrid, Inst. Estructura Materia) ; Turturica, A (Bucharest, IFIN-HH) ; Van Duppen, P (Leuven U.) ; Vedia, V (Madrid U.) ; Wadsworth, R (York U., England) ; Warr, N (Cologne U.) |
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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$^{15}$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. |