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Title: Properties of low-lying intruder states in {sup 34}Al and {sup 34}Si populated in the beta-decay of {sup 34}Mg

The results of the IS530 experiment at ISOLDE revealed new information concerning several nuclei close to the N ≈ 20 'Island of Inversion' - {sup 34}Mg, {sup 34}Al, {sup 34}Si. The half-life of {sup 34}Mg was found to be three times larger than the adopted value (63(1) ms instead of 20(10) ms). The beta-gamma spectroscopy of {sup 34}Mg performed for the first time in this experiment, led to the first experimental level scheme for {sup 34}Al, also showing that the full beta strength goes through the predicted 1{sup +} isomer in {sup 34}Al [1] and/or excited states that deexcite to it. The subsequent beta-decay of the 1{sup +} isomer in {sup 34}Al allowed the observation of new gamma lines in {sup 34}Si, (tentatively) associated with low-spin high-energy excited states previously unobserved.
Authors:
 [1] ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;  [2] ;  [3] ;  [4] more »; « less
  1. Horia Hulubei National Institute for Physics and Nuclear Engineering, IFIN-HH, P.O.B. MG-6, 077125 Magurele, Romania and ISOLDE/CERN, Geneva (Switzerland)
  2. Horia Hulubei National Institute for Physics and Nuclear Engineering, IFIN-HH, P.O.B. MG-6, 077125 Magurele (Romania)
  3. CENBG, Université de Bordeaux, CNRS/IN2P3, Chemin du Solarium, 33175 Gradignan Cedex (France)
  4. IPHC, Université de Strasbourg, IN2P3/CNRS, BP28, F-67037 Strasbourg Cedex (France)
Publication Date:
OSTI Identifier:
22390997
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1645; Journal Issue: 1; Conference: Carpathian Summer School of Physics 2014, Sinaia (Romania), 13-26 Jul 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ALUMINIUM 34; BETA DECAY; EXCITED STATES; GAMMA SPECTROSCOPY; HALF-LIFE; ISOMERIC NUCLEI; MAGNESIUM 34; NUCLEAR STRUCTURE; SILICON 34; SPIN