{sup 7}Be in Stars and in the Laboratory

Journal Article · Thu Jan 24 00:00:00 EST 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2870284· OSTI ID:21052857

Hass, Michael; Kumar, Vivek ^[1]

---

1. Department of Particle Physics, Weizmann Institute of Science, Rehovot (Israel)

We discuss results and future plans for low-energy reactions that play an important role in current nuclear astrophysics research and that happen to concentrate around the region of A = 7. The {sup 7}Be(p,{gamma}){sup 8}B and the {sup 3}He({sup 4}He,{gamma}){sup 7}Be reactions are crucial for understanding the solar-neutrino oscillations phenomenon and the latter one plays a central role in the issue of cosmic {sup 7}Li abundance and Big-Bang Nucleosynthesis. The electron-capture (EC) decay rate of {sup 7}Be in metallic Cu host and the {beta}{sup -}decay rate of {sup 198}Au in the host alloy Al-Au have been measured simultaneously at several temperatures, ranging from 0.350 K to 293 K. The resulting null temperature dependence is discussed in terms of the inadequacy of the often-used Debye-Hueckel model for such measurements.

• OSTI ID: 21052857
• Journal Information: AIP Conference Proceedings, Vol. 972, Issue 1; Conference: Carpathian summer school of physics 2007 on exotic nuclei and nuclear/particle astrophysics (II), Sinaia (Romania), 21-31 Aug 2007; Other Information: DOI: 10.1063/1.2870284; (c) 2008 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
ALPHA REACTIONS
ASTROPHYSICS
BERYLLIUM 7
BERYLLIUM 7 TARGET
BETA DECAY
BORON 8
COSMIC NEUTRINOS
ELECTRON CAPTURE
ELEMENT ABUNDANCE
GOLD 198
HELIUM 3
HELIUM 3 TARGET
HELIUM 4
LITHIUM 7
NEUTRINO OSCILLATION
NUCLEOSYNTHESIS
PROTON REACTIONS
SOLAR NEUTRINOS
STARS
TEMPERATURE DEPENDENCE