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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

Abstract

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

Citation Formats

Lică, R., Rotaru, F., Negoită, F., Mărginean, N., Borcea, C., Borcea, R., Călinescu, S., Filipescu, D., Gheorghe, I., Ghită, D. G., Mărginean, R., Mihai, C., Negret, A., Pietreanu, D., Sava, T., Stănoiu, M., Şuvăilă, R., Toma, S., Grévy, S., Desagne, Ph., and and others. Properties of low-lying intruder states in {sup 34}Al and {sup 34}Si populated in the beta-decay of {sup 34}Mg. United States: N. p., 2015. Web. doi:10.1063/1.4909602.
Lică, R., Rotaru, F., Negoită, F., Mărginean, N., Borcea, C., Borcea, R., Călinescu, S., Filipescu, D., Gheorghe, I., Ghită, D. G., Mărginean, R., Mihai, C., Negret, A., Pietreanu, D., Sava, T., Stănoiu, M., Şuvăilă, R., Toma, S., Grévy, S., Desagne, Ph., & and others. Properties of low-lying intruder states in {sup 34}Al and {sup 34}Si populated in the beta-decay of {sup 34}Mg. United States. doi:10.1063/1.4909602.
Lică, R., Rotaru, F., Negoită, F., Mărginean, N., Borcea, C., Borcea, R., Călinescu, S., Filipescu, D., Gheorghe, I., Ghită, D. G., Mărginean, R., Mihai, C., Negret, A., Pietreanu, D., Sava, T., Stănoiu, M., Şuvăilă, R., Toma, S., Grévy, S., Desagne, Ph., and and others. Tue . "Properties of low-lying intruder states in {sup 34}Al and {sup 34}Si populated in the beta-decay of {sup 34}Mg". United States. doi:10.1063/1.4909602.
@article{osti_22390997,
title = {Properties of low-lying intruder states in {sup 34}Al and {sup 34}Si populated in the beta-decay of {sup 34}Mg},
author = {Lică, R. and Rotaru, F. and Negoită, F. and Mărginean, N. and Borcea, C. and Borcea, R. and Călinescu, S. and Filipescu, D. and Gheorghe, I. and Ghită, D. G. and Mărginean, R. and Mihai, C. and Negret, A. and Pietreanu, D. and Sava, T. and Stănoiu, M. and Şuvăilă, R. and Toma, S. and Grévy, S. and Desagne, Ph. and and others},
abstractNote = {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.},
doi = {10.1063/1.4909602},
journal = {AIP Conference Proceedings},
number = 1,
volume = 1645,
place = {United States},
year = {Tue Feb 24 00:00:00 EST 2015},
month = {Tue Feb 24 00:00:00 EST 2015}
}