Published June 20, 1994
| Version v1
Journal article
Observation of substantial p-wave capture strength in the 7Li(rvec p,γ)8Be reaction for Ep=80--0 keV and implications for astrophysical S factors
- 1. Duke University and Triangle Universities Nuclear Laboratory, Box 90308, Durham, North Carolina 27708-0308 (United States)
- 2. North Carolina State University and Triangle Universities Nuclear Laboratory, Raleigh, North Carolina 27695-8202 (United States)
- 3. West Georgia College, Carrollton, Georgia 30118 (United States)
Description
The 7Li(rvec p,γ)8Be reaction has been studied using polarized protons having an incident energy in the range Ep(lab)=80--0 keV. The measured angular distributions of the cross section σ(θ)/A0 and analyzing power Ay(θ) were interpreted using a model independent transition-matrix element analysis. The large (∼40%) analyzing power at 90 degree indicates the presence of an appreciable p-wave capture strength at these energies. The direct capture model is used to show that this could reduce the astrophysical S factor by as much as 40%
Additional details
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 72
- Journal Issue
- 25
- Journal Page Range
- p. 3949-3952.
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 25068200
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- ANGULAR DISTRIBUTION; BERYLLIUM 8; CAPTURE; CROSS SECTIONS; LITHIUM 7 TARGET; MATRIX ELEMENTS; P WAVES; PHOTONS; POLARIZED BEAMS; PROTON REACTIONS; TRANSITION AMPLITUDES
- Descriptors DEC
- ALPHA DECAY RADIOISOTOPES; AMPLITUDES; BARYON REACTIONS; BEAMS; BERYLLIUM ISOTOPES; BOSONS; DISTRIBUTION; ELEMENTARY PARTICLES; EVEN-EVEN NUCLEI; HADRON REACTIONS; ISOTOPES; LIGHT NUCLEI; MASSLESS PARTICLES; NUCLEAR REACTIONS; NUCLEI; NUCLEON REACTIONS; PARTIAL WAVES; RADIOISOTOPES; TARGETS