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Observation of gamm...
Observation of gamma-delayed 3 alpha breakup of the 15.11 and 12.71 MeV states in C-12
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- Kirsebom, O. S. (author)
- Århus Universitet,Aarhus University
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- Alcorta, M. (author)
- CSIC - Instituto de Estructura de la Materia (IEM)
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- Borge, M. J. G. (author)
- CSIC - Instituto de Estructura de la Materia (IEM)
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- Cubero, M. (author)
- CSIC - Instituto de Estructura de la Materia (IEM)
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- Diget, C. A. (author)
- University of York
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- Dominguez-Reyes, R. (author)
- CSIC - Instituto de Estructura de la Materia (IEM)
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- Fraile, L. (author)
- CSIC - Instituto de Estructura de la Materia (IEM)
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- Fulton, B. R. (author)
- University of York
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- Fynbo, H. O. U. (author)
- Århus Universitet,Aarhus University
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- Galaviz, D. (author)
- CSIC - Instituto de Estructura de la Materia (IEM)
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- Garcia, G. (author)
- Universidad Autonoma de Madrid (UAM)
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- Hyldegaard, S. (author)
- Århus Universitet,Aarhus University
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- Jeppesen, H. B. (author)
- Århus Universitet,Aarhus University
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- Jonson, Björn, 1941 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Joshi, P. (author)
- University of York
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- Madurga, M. (author)
- CSIC - Instituto de Estructura de la Materia (IEM)
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- Maria, A. (author)
- CSIC - Instituto de Estructura de la Materia (IEM)
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- Munoz, A. (author)
- Universidad Autonoma de Madrid (UAM)
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- Nilsson, Thomas, 1965 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Nyman, Göran Hugo, 1943 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Obradors, D. (author)
- CSIC - Instituto de Estructura de la Materia (IEM)
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- Perea, A. (author)
- CSIC - Instituto de Estructura de la Materia (IEM)
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- Riisager, K. (author)
- Århus Universitet,Aarhus University
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- Tengblad, Olof, 1957 (author)
- CSIC - Instituto de Estructura de la Materia (IEM)
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- Turrion, M. (author)
- CSIC - Instituto de Estructura de la Materia (IEM)
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(creator_code:org_t)
- Elsevier BV, 2009
- 2009
- English.
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In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. - : Elsevier BV. - 0370-2693. ; 680:1, s. 44-49
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Abstract
Subject headings
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- The reactions B-10(He-3, p alpha alpha alpha) at 4.9 MeV and B-11(He-3, d alpha alpha alpha) at 8.5 MeV have been used to investigate the gamma decay of states in C-12. By measuring the four-body final state in complete kinematics we are able to detect gamma transitions indirectly. We find gamma transitions from the 15.11 MeV state in C-12 to the 12.71, 11.83, 10.3 and 7.65 MeV states followed by their breakup into three alpha particles. The relative gamma-ray branching ratios obtained are (1.2 +/- 0.3), (0.32 +/- 0.12), (1.4 +/- 0.2) and (4.4 +/- 0.8)%, respectively, with the remaining (92.7 +/- 1.0)% of the gamma decays going to the bound states. We obtain Gamma(alpha)/Gamma = (2.8 +/- 1.2)% for the isospinforbidden alpha decay of the 15.11 MeV state. From the 12.71 MeV state we find gamma transitions to the 10.3 and 7.65 MeV states. The relative gamma-ray branching ratios are (0.9(-0.5)(+0.6)) and (2.6(-1.2)(+1.6))%, respectively, with the remaining (96.6(-1.3)(+1.7))% of the gamma decays going to the bound states. Finally. we discuss the relation between the beta decay of N-12 and B-12 to states in C-12 and the gamma decay of the 15.11 MeV analog in C-12 to the same states. (C) 2009 Elsevier B.V. All rights reserved.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Keyword
- transitions
- isovector
- unbound state
- complete kinematics
- electron-scattering
- deduced gamma transition
- decay
- light-nuclei
Publication and Content Type
- art (subject category)
- ref (subject category)
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To the university's database
- By the author/editor
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Kirsebom, O. S.
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Alcorta, M.
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Borge, M. J. G.
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Cubero, M.
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Diget, C. A.
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Dominguez-Reyes, ...
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show more...
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Fraile, L.
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Fulton, B. R.
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Fynbo, H. O. U.
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Galaviz, D.
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Garcia, G.
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Hyldegaard, S.
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Jeppesen, H. B.
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Jonson, Björn, 1 ...
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Joshi, P.
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Madurga, M.
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Maria, A.
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Munoz, A.
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Nilsson, Thomas, ...
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Nyman, Göran Hug ...
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Obradors, D.
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Perea, A.
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Riisager, K.
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Tengblad, Olof, ...
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Turrion, M.
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Subatomic Physic ...
- Articles in the publication
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Physics Letters, ...
- By the university
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Chalmers University of Technology