Published February 14, 2003 | Version v1
Journal article Metadata-only

Determination of the subthreshold state contribution in C13(α,n)O16, the main neutron-source reaction for the s process

Creators

  • 1. Center for Nuclear Study, University of Tokyo, Wako Branch at RIKEN, Hirosawa 2-1, Wako, Saitama, 351-0198 Japan (Japan)
  • 2. Department of Physics, Yamagata University, Yamagata, 999-8560 Japan (Japan)
  • 3. Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033 Japan (Japan)
  • 4. Department of Physics, Tohoku University, Sendai, 980-8578 Japan (Japan)
  • 5. RIKEN, Hirosawa 2-1, Wako, Saitama, 351-0198 Japan (Japan)
  • 6. The Institute of Particle and Nuclear Study, High Energy Accelerator Organization, Tsukuba, 305-0801 Japan (Japan)
  • 7. Department of Physics, Chung-Ang University, Seoul, 156-756 (Korea, Republic of)

Description

The reaction rate of the stellar reaction C13(α,n)O16, which is currently considered to be the main neutron source for the slow (s) process at low energies, has been rederived using the direct α-transfer reaction C13(Li6,d)O17 leading to the subthreshold state at 6.356 MeV in O17. The contribution of the subthreshold state is found to be much smaller than the currently accepted predictions for the main neutron source of the s process, indicating less of a role of this reaction as the neutron source for the s-process scenario in low-mass stars at the asymptotic giant branch

Additional details

Identifiers

DOI
10.1103/PhysRevLett.90.062501;

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
90
Journal Issue
6
Journal Page Range
p. 062501-062501.4
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
35046525
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Descriptors DEI
ALPHA REACTIONS; CARBON 13 TARGET; LITHIUM 6 REACTIONS; NEUTRON SOURCES; NEUTRONS; NUCLEOSYNTHESIS; OXYGEN 16; OXYGEN 17; REACTION KINETICS; S PROCESS; STELLAR ACTIVITY; TRANSFER REACTIONS
Descriptors DEC
BARYONS; CHARGED-PARTICLE REACTIONS; DIRECT REACTIONS; ELEMENTARY PARTICLES; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; EVOLUTION; FERMIONS; HADRONS; HEAVY ION REACTIONS; ISOTOPES; KINETICS; LIGHT NUCLEI; NUCLEAR REACTIONS; NUCLEI; NUCLEONS; OXYGEN ISOTOPES; PARTICLE SOURCES; RADIATION SOURCES; STABLE ISOTOPES; STAR EVOLUTION; SYNTHESIS; TARGETS

Optional Information

Notes
(c) 2003 The American Physical Society