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First Accurate Norm...
First Accurate Normalization of the β -delayed α Decay of N 16 and Implications for the C 12 (α,γ) O 16 Astrophysical Reaction Rate
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- Kirsebom, O. S. (author)
- Århus Universitet,Aarhus University
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- Tengblad, O. (author)
- CSIC - Instituto de Estructura de la Materia (IEM)
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- Lica, R. (author)
- Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering,Organisation européenne pour la recherche nucléaire (CERN),European Organization for Nuclear Research (CERN)
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- Munch, M. (author)
- Århus Universitet,Aarhus University
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- Riisager, K. (author)
- Århus Universitet,Aarhus University
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- Fynbo, H. O. U. (author)
- Århus Universitet,Aarhus University
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- Borge, M. (author)
- CSIC - Instituto de Estructura de la Materia (IEM),Organisation européenne pour la recherche nucléaire (CERN),European Organization for Nuclear Research (CERN)
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- Madurga, M. (author)
- Organisation européenne pour la recherche nucléaire (CERN),European Organization for Nuclear Research (CERN)
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- Marroquin, I. (author)
- CSIC - Instituto de Estructura de la Materia (IEM)
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- Andreyev, A. (author)
- University of York,Japan Atomic Energy Agency
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- Berry, Tom (author)
- University of Surrey
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- Christensen, Esben R. (author)
- Århus Universitet,Aarhus University
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- Diaz Fernandez, Paloma, 1983 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Doherty, D. T. (author)
- University of York
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- Van Duppen, P. (author)
- Katholieke Universiteit Leuven
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- Fraile, L. M. (author)
- Universidad Complutense de Madrid,Complutense University
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- Gallardo, Mariano C. (author)
- Universidad Complutense de Madrid,Complutense University
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- Greenlees, P. T. (author)
- Jyväskylän Yliopisto,University of Jyväskylä,Helsingin Yliopisto,University of Helsinki
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- Harkness-Brennan, L. J. (author)
- University of Liverpool
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- Hubbard, Nicolas (author)
- University of York,Århus Universitet,Aarhus University
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- Huyse, M. (author)
- Katholieke Universiteit Leuven
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- Jensen, J. H. (author)
- Århus Universitet,Aarhus University
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- Johansson, Håkan T, 1977 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Jonson, Björn, 1941 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Judson, D. S. (author)
- University of Liverpool
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- Konki, J. (author)
- Jyväskylän Yliopisto,University of Jyväskylä,Helsingin Yliopisto,University of Helsinki,Organisation européenne pour la recherche nucléaire (CERN),European Organization for Nuclear Research (CERN)
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- Lazarus, I. (author)
- Daresbury Laboratory
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- Lund, M. V. (author)
- Århus Universitet,Aarhus University
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- Marginean, N. (author)
- Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering
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- Marginean, R. (author)
- Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering
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- Perea, A. (author)
- CSIC - Instituto de Estructura de la Materia (IEM)
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- Mihai, C. (author)
- Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering
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- Negret, A. (author)
- Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering
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- Page, R. D. (author)
- University of Liverpool
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- Pucknell, V. (author)
- Daresbury Laboratory
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- Rahkila, P. (author)
- Helsingin Yliopisto,University of Helsinki,Jyväskylän Yliopisto,University of Jyväskylä
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- Sorlin, Olivier (author)
- Organisation européenne pour la recherche nucléaire (CERN),European Organization for Nuclear Research (CERN),IN2P3 Institut National de Physique Nucleaire et de Physique des Particules
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- Sotty, C. (author)
- Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering
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- Swartz, Jacobus A. (author)
- Århus Universitet,Aarhus University
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- Sørensen, H. B. (author)
- Århus Universitet,Aarhus University
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- Törnqvist, Hans, 1985 (author)
- Helmholtz Zentrum,Helmholtz Center,Technische Universität Darmstadt
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- Vedia, V. (author)
- Universidad Complutense de Madrid,Complutense University
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- Warr, N. (author)
- Universität zu Köln,University of Cologne
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- De Witte, H. (author)
- Katholieke Universiteit Leuven
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(creator_code:org_t)
- 2018
- 2018
- English.
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In: Physical Review Letters. - 1079-7114 .- 0031-9007. ; 121:14
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Abstract
Subject headings
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- Published by the American Physical Society. The C12(α,γ)O16 reaction plays a central role in astrophysics, but its cross section at energies relevant for astrophysical applications is only poorly constrained by laboratory data. The reduced α width, γ11, of the bound 1- level in O16 is particularly important to determine the cross section. The magnitude of γ11 is determined via sub-Coulomb α-transfer reactions or the β-delayed α decay of N16, but the latter approach is presently hampered by the lack of sufficiently precise data on the β-decay branching ratios. Here we report improved branching ratios for the bound 1- level [bβ,11=(5.02±0.10)×10-2] and for β-delayed α emission [bβα=(1.59±0.06)×10-5]. Our value for bβα is 33% larger than previously held, leading to a substantial increase in γ11. Our revised value for γ11 is in good agreement with the value obtained in α-transfer studies and the weighted average of the two gives a robust and precise determination of γ11, which provides significantly improved constraints on the C12(α,γ) cross section in the energy range relevant to hydrostatic He burning.
Subject headings
- NATURVETENSKAP -- Fysik -- Acceleratorfysik och instrumentering (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Accelerator Physics and Instrumentation (hsv//eng)
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Keyword
- Thermonuclear reactions
- Nuclear reactions
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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Tengblad, O.
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Lica, R.
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Munch, M.
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Riisager, K.
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Fynbo, H. O. U.
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show more...
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Borge, M.
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Madurga, M.
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Marroquin, I.
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Andreyev, A.
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Berry, Tom
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Christensen, Esb ...
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Diaz Fernandez, ...
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Doherty, D. T.
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Van Duppen, P.
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Fraile, L. M.
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Gallardo, Marian ...
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Greenlees, P. T.
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Harkness-Brennan ...
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Hubbard, Nicolas
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Huyse, M.
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Jensen, J. H.
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Johansson, Håkan ...
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Jonson, Björn, 1 ...
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Judson, D. S.
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Konki, J.
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Lazarus, I.
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Lund, M. V.
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Marginean, N.
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Marginean, R.
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Perea, A.
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Mihai, C.
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Negret, A.
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Page, R. D.
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Pucknell, V.
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Rahkila, P.
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Sorlin, Olivier
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Sotty, C.
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Swartz, Jacobus ...
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Sørensen, H. B.
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Törnqvist, Hans, ...
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Vedia, V.
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Warr, N.
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De Witte, H.
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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 Accelerator Phys ...
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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 ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Atom and Molecul ...
- Articles in the publication
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Physical Review ...
- By the university
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Chalmers University of Technology