2H(p, gamma) 3He cross section measurement using high-energy-density plasmas
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Author(s)
Zylstra, A.B.
Herrmann, H.W.
Kim, Y.H.
McEvoy, A.
Frenje, Johan A.
Gatu Johnson, Maria
Petrasso, Richard D.
Glebov, V.Yu.
Forrest, C.
Delettrez, J.
Date Issued
April 2020
Journal
Physical Review. C, Nuclear physics
Publisher
APS
Abstract
An absolute cross section for the radiative capture reaction 2H(p, γ ) 3He 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 ± 0.026stat ± 0.072sys eV b at Ec.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.
Description
Submitted for publication in Physical Review. C, Nuclear physics
MIT Department
Massachusetts Institute of Technology. Plasma Science and Fusion Center
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/physrevc.101.042802
