Journal
PHYSICAL REVIEW C
Volume 101, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.101.042802
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Funding
- U.S. Department of Energy [DE-AC52-07NA27344]
- U.S. DOE Early Career Research Program (Fusion Energy Sciences) [FWP SCW1658]
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An absolute cross section for the radiative capture reaction H-2(p, gamma)He-3 has been measured at the OMEGA laser facility using inertially confined plasmas. These high-temperature plasmas are created by imploding a fuel-containing capsule using laser ablation, and are advantageous in that they better mimic astrophysical systems. We measure an S factor for this reaction of 0.429 +/- 0.026(stat) +/- 0.072(sys) eV b at E-c.m. = 16.35 +/- 0.40 keV, which is higher than the adopted evaluations. This reaction is important as a source of nuclear energy in protostars and brown dwarfs. It is also a critical reaction during big-bang nucleosynthesis, and an accurate cross section can be used as a constraint on cosmology.
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