Big bang nucleosynthesis revisited via Trojan Horse method measurements

Journal Article · Sat May 10 00:00:00 EDT 2014 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/786/2/112· OSTI ID:22356922

Pizzone, R. G.; Spartá, R.; Spitaleri, C.; La Cognata, M.; Tumino, A. ^[1]; Bertulani, C. A.; Lalmansingh, J. ^[2]; Lamia, L. ^[3]

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1. INFN—Laboratori Nazionali del Sud, Via Santa Sofia 62, I-95123 Catania (Italy)
2. Department of Physics and Astronomy, Texas A and M University, Commerce, TX 75025 (United States)
3. Dipartimento di Fisica e Astronomia, Università degli Studi di Catania, Via Santa Sofia 64, I-95123 Catania (Italy)

Nuclear reaction rates are among the most important input for understanding primordial nucleosynthesis and, therefore, for a quantitative description of the early universe. An up-to-date compilation of direct cross-sections of {sup 2}H(d, p){sup 3}H, {sup 2}H(d, n){sup 3}He, {sup 7}Li(p, α){sup 4}He, and {sup 3}He(d, p){sup 4}He reactions is given. These are among the most uncertain cross-sections used and input for big bang nucleosynthesis calculations. Their measurements through the Trojan Horse method are also reviewed and compared with direct data. The reaction rates and the corresponding recommended errors in this work were used as input for primordial nucleosynthesis calculations to evaluate their impact on the {sup 2}H, {sup 3,4}He, and {sup 7}Li primordial abundances, which are then compared with observations.

• OSTI ID: 22356922
• Journal Information: Astrophysical Journal, Vol. 786, Issue 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ABUNDANCE
COMPARATIVE EVALUATIONS
CROSS SECTIONS
DEUTERIUM TARGET
DEUTERON REACTIONS
HELIUM 3
HELIUM 3 TARGET
HELIUM 4
LITHIUM 7 TARGET
NEUTRON EMISSION
NUCLEAR REACTIONS
NUCLEOSYNTHESIS
PROTON REACTIONS
PROTON-EMISSION DECAY
REACTION KINETICS
TRITIUM
UNIVERSE