Precision measurement of the decay rate of 7Be in host materials
Creators
- 1. Radiation Safety Division, Soreq Nuclear Research Centre, Yavne (Israel)
- 2. Department of Particle Physics, Weizmann Institute of Science, Rehovot (Israel)
- 3. Institut Laue Langevin, Grenoble (France)
- 4. ISOLDE, CERN, Geneva (Switzerland)
- 5. CSNSM, CNRS/IN2P3, Universite Paris-Sud, ORSAY-Campus (France)
- 6. Physics Department, University of Manchester, Manchester (United Kingdom)
- 7. Laboratory of Radiochemistry, Paul Scherrer Institute, Villigen (Switzerland)
- 8. Target Facilities and Active Technique Section, Accelerator Division, Paul Scherrer Institute, Villigen (Switzerland)
Description
A controlled and precise determination of the cross sections of the fusion reactions 7Be(p,γ)8B and 3He(4He,γ)7Be, which play an important role in determining the solar neutrino flux, necessitates the knowledge of a precise value of the electron-capture half-life of 7Be. This half-life may depend on the material hosting the 7Be atoms via small modifications of the electron density around the 7Be nucleus. In this brief communication we report on the measurement of 7Be implanted in four materials: copper, aluminum, sapphire, and PVC. The four results are consistent with a null host dependence within two standard deviations and their weighted average of 53.236(39) d agrees very well with the adopted value in the literature, 53.22(6) d. The present results may exhibit a slight (0.22%) increase of the half-life at room temperature for metals compared to insulators that requires further studies
Additional details
Identifiers
- DOI
- 10.1103/PhysRevC.75.012801;
- arXiv
- arXiv:nucl-ex/0612003v1;
Publishing Information
- Journal Title
- Physical Review. C, Nuclear Physics
- Journal Volume
- 75
- Journal Issue
- 1
- Journal Page Range
- p. 012801-012801.4
- ISSN
- 0556-2813
- CODEN
- PRVCAN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39014316
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- ALPHA PARTICLES; ALUMINIUM; BERYLLIUM 7; BORON 8; COPPER; ELECTRON CAPTURE; HALF-LIFE; HEAVY ION FUSION REACTIONS; HELIUM 3; HELIUM 4; PROTON REACTIONS; PROTON-NUCLEON INTERACTIONS; PVC; SAPPHIRE; SOLAR NEUTRINOS; TEMPERATURE RANGE 0273-0400 K; TRITONS
- Descriptors DEC
- ALKALINE EARTH ISOTOPES; BARYON REACTIONS; BARYON-BARYON INTERACTIONS; BERYLLIUM ISOTOPES; BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; BORON ISOTOPES; CAPTURE; CHARGED PARTICLES; CHARGED-PARTICLE REACTIONS; CHLORINATED ALIPHATIC HYDROCARBONS; CORUNDUM; DAYS LIVING RADIOISOTOPES; ELECTRON CAPTURE RADIOISOTOPES; ELEMENTARY PARTICLES; ELEMENTS; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; FERMIONS; HADRON REACTIONS; HADRON-HADRON INTERACTIONS; HALOGENATED ALIPHATIC HYDROCARBONS; HEAVY ION REACTIONS; HELIUM ISOTOPES; INTERACTIONS; IONIZING RADIATIONS; ISOTOPES; LEPTONS; LIGHT NUCLEI; MASSLESS PARTICLES; METALS; MILLISECONDS LIVING RADIOISOTOPES; MINERALS; NEUTRINOS; NUCLEAR REACTIONS; NUCLEI; NUCLEON REACTIONS; NUCLEON-NUCLEON INTERACTIONS; NUCLEOSYNTHESIS; ODD-ODD NUCLEI; ORGANIC CHLORINE COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC HALOGEN COMPOUNDS; ORGANIC POLYMERS; OXIDE MINERALS; PARTICLE INTERACTIONS; POLYMERS; POLYVINYLS; RADIATIONS; RADIOISOTOPES; SOLAR PARTICLES; SOLAR RADIATION; STABLE ISOTOPES; STELLAR RADIATION; SYNTHESIS; TEMPERATURE RANGE; TRANSITION ELEMENTS
Optional Information
- Notes
- (c) 2007 The American Physical Society