Electron scattering on the Hoyle state and carbon production in stars

Journal Article · Wed Jan 28 00:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3087081· OSTI ID:21255476

Chernykh, M; Neumann-Cosel, P von; Richter, A ^[1]; Blok, H P ^[2]; Feldmeier, H; Neff, T ^[3]

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1. Institut fuer Kernphysik, Technische Universitaet Darmstadt, D-64289 Darmstadt (Germany)
2. Department of Physics and Astronomy, Vrije Universiteit, 1081 HV Amsterdam (Netherlands)
3. Gesellschaft fuer Schwerionenforschung (GSI), D-64291 Darmstadt (Germany)

High-resolution inelastic electron scattering experiments were performed at the S-DALINAC for a precise determination of the partial pair width {gamma}{sub {pi}} of the second J{sup {pi}} = 0{sup +} state, the so-called Hoyle state, in {sup 12}C. Results for the monopole matrix element (directly related to {gamma}{sub {pi}}) from a nearly model-independent analysis based on an extrapolation of low-q data to zero momentum transfer are presented. Additionally, a Fourier-Bessel analysis of the transition form factor is discussed. The combined result of both methods leads to a pair width {gamma}{sub {pi}}62.2(10) {mu}eV.

• OSTI ID: 21255476
• Journal Information: AIP Conference Proceedings, Vol. 1090, Issue 1; Conference: 13. international symposium on capture gamma-ray spectroscopy and related topics, Cologne (Germany), 25-29 Aug 2008; Other Information: DOI: 10.1063/1.3087081; (c) 2009 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
CARBON
CARBON 12
ELECTRON-ELECTRON COLLISIONS
ELECTRON-ELECTRON INTERACTIONS
ELECTRONS
EXTRAPOLATION
FORM FACTORS
FOURIER ANALYSIS
MATRIX ELEMENTS
MOMENTUM TRANSFER
MONOPOLES
NUCLEOSYNTHESIS
SCATTERING
STARS