CNO and sup 6 Li from big-bang nucleosynthesis---Impact of unmeasured reaction rates
- Institute of Astronomy, University of Aarhus, DK-8000 Aarhus C, Denmark (DK)
Rates for a number of nuclear reactions not studied in the laboratory are crucial for predicting the outcome of big-bang nucleosynthesis. It is shown in the present investigation that the mass fraction of CNO elements produced in neutron-rich zones in inhomogeneous nucleosynthesis (other parameters fixed) spans almost 3 orders of magnitude depending on the unmeasured rate of {sup 8}Li({alpha},{ital n}){sup 11}B. The possibility of producing observable quantities of primordial {sup 6}Li via {sup 3}H({sup 3}He,{gamma}){sup 6}Li is discussed for the first time, and finally it is reported that helium production through {sup 2}H({sup 2}H, {gamma}){sup 4}He is negligible in all nucleosynthesis scenarios, in spite of recent measurements increasing the low-energy rate by a factor 32.
- OSTI ID:
- 6769641
- Journal Information:
- Physical Review, D (Particles Fields); (USA), Vol. 41:8; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GENERAL PHYSICS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
NUCLEOSYNTHESIS
CNO CYCLE
UNIVERSE
ALPHA REACTIONS
CAPTURE
COMPOUND-NUCLEUS REACTIONS
DEUTERIUM TARGET
DEUTERON REACTIONS
GAMMA RADIATION
HELIUM 3 REACTIONS
HELIUM 4
LITHIUM 6
LITHIUM 8
NEUTRONS
TRITIUM TARGET
ALKALI METAL ISOTOPES
BARYONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
EVEN-EVEN NUCLEI
FERMIONS
HADRONS
HELIUM ISOTOPES
IONIZING RADIATIONS
ISOTOPES
LIGHT NUCLEI
LITHIUM ISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
ODD-ODD NUCLEI
RADIATIONS
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
STABLE ISOTOPES
STAR BURNING
SYNTHESIS
TARGETS
640106* - Astrophysics & Cosmology- Cosmology
653003 - Nuclear Theory- Nuclear Reactions & Scattering