Information about the {sup 12}C({alpha},{gamma}){sup 16}O reaction from the {beta}-delayed proton decay of {sup 17}Ne

Journal Article · Sun Feb 15 00:00:00 EST 1998 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.55162· OSTI ID:21182554

King, J D; Chow, J C; Morton, A C; Azuma, R E ^[1]; Bateman, N ^[2]; Boyd, R N ^[3]; Buchmann, L; Dombsky, M; Gete, E; Jackson, K P; Shoppa, T ^[4]; D'Auria, J M ^[5]; Davinson, T; Shotter, A ^[6]; Galster, W ^[7]; Giesen, U ^[4]; Iliadis, C ^[1]; Roy, G ^[8]

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1. Physics Department, University of Toronto, Toronto, Ontario, M5S 1A7 (Canada)
2. Physics Department, University of Toronto, Toronto, Ontario, Canada M5S 1A7 (Canada)
3. Departments of Physics and Astronomy, Ohio State University, Columbus, Ohio 43210 (United States)
4. TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, V6T 2A3 (Canada)
5. Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, V5A 1S6 (Canada)
6. Department of Physics and Astronomy, University of Edinburgh, Edinburgh, EH9 3JZ (United Kingdom)
7. Departement de Physique, Universite Catholique de Louvain, Louvain-la-Neuve, 1348 (Belgium)
8. Department of Physics, University of Alberta, Edmonton, Alberta, T6G 2J1 (Canada)

We are studying the {beta}-delayed proton decay of {sup 17}Ne with the goal of determining the E2 part of the {sup 12}C({alpha},{gamma}){sup 16}O cross section at energies relevant to helium burning in stars. We have determined branching ratios for proton and {alpha}-decay for states in {sup 17}F from 8.08 to 11.193 MeV. In addition, we have observed the break-up of the isobaric analogue state (IAS) at 11.193 MeV into three particles via two channels: proton decay to the 9.59 MeV state in {sup 16}O which breaks up into an {alpha}-particle plus {sup 12}C; and {alpha}-decay to the 2.365 MeV state in {sup 13}N which breaks up into a proton plus {sup 12}C. This is the first reported observation of the decay of the IAS to the 1{sup -} state in {sup 16}O at 9.59 MeV.

• OSTI ID: 21182554
• Journal Information: AIP Conference Proceedings, Vol. 425, Issue 1; Conference: Tours symposium on nuclear physics III, Tours (France), 2-5 Sep 1997; Other Information: DOI: 10.1063/1.55162; (c) 1998 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY
ALPHA PARTICLES
ALPHA REACTIONS
BETA DECAY
BRANCHING RATIO
BREAKUP REACTIONS
CARBON 12
CARBON 12 TARGET
CROSS SECTIONS
DELAYED PROTONS
E2-TRANSITIONS
FLUORINE 17
HELIUM BURNING
ISOBARIC ANALOGS
MEV RANGE
NEON 17
NITROGEN 13
OXYGEN 16
PROTON-EMISSION DECAY