A drop in the 6Li(p,γ)7Be reaction at low energies
Creators
- 1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China)
- 2. University of Chinese Academy of Sciences, Beijing 100049 (China)
- 3. Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, Bochum 44780 (Germany)
- 4. Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States)
- 5. Department of Astronomy, Graduate School of Science, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan)
- 6. National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588 (Japan)
- 7. Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582 (Japan)
- 8. China Institute of Atomic Energy, P.O. Box 275(1), Beijing 102413 (China)
Description
The low-energy astrophysical S factors of the 6Li(p,γ)7Be reaction have been investigated on a 320 kV platform at the Institute of Modern Physics in Lanzhou. The experimental S factor of this reaction shows an interesting sizable drop contrary to any existing theoretical expectations at energies below 200 keV. Such drop has not been fully understood yet and may reflect a novel reaction mechanism. The appearance of an interesting new positive-parity 1/2+ or 3/2+ resonance at Ec.m.≈195 keV is discussed. This study shows the danger of extrapolating experimental data over too large an energy range and demonstrates the need for careful direct experimental studies of reaction cross sections at or near stellar energies. In addition, our new results are discussed in the framework of a SUSY assisted Big-Bang Nucleosynthesis (BBN) model
Availability note (English)
Available from http://dx.doi.org/10.1016/j.physletb.2013.07.044Additional details
Identifiers
- DOI
- 10.1016/j.physletb.2013.07.044;
- PII
- S0370-2693(13)00608-4;
Publishing Information
- Journal Title
- Physics Letters. Section B
- Journal Volume
- 725
- Journal Issue
- 4-5
- Journal Page Range
- p. 287-291
- ISSN
- 0370-2693
- CODEN
- PYLBAJ
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 45062713
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- ASTROPHYSICS; BERYLLIUM 7; CAPTURE; CROSS SECTIONS; KEV RANGE; LITHIUM 6; NUCLEOSYNTHESIS; PARITY; REACTION KINETICS; SUPERSYMMETRY
- Descriptors DEC
- ALKALINE EARTH ISOTOPES; BERYLLIUM ISOTOPES; BETA DECAY RADIOISOTOPES; DAYS LIVING RADIOISOTOPES; ELECTRON CAPTURE RADIOISOTOPES; ENERGY RANGE; EVEN-ODD NUCLEI; ISOTOPES; KINETICS; LIGHT NUCLEI; LITHIUM ISOTOPES; NUCLEI; ODD-ODD NUCLEI; PARTICLE PROPERTIES; PHYSICS; RADIOISOTOPES; STABLE ISOTOPES; SYMMETRY; SYNTHESIS
Optional Information
- Copyright
- Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.