Experimental cross section and angular distribution of the$^{2}$H(p, $\gamma$ )$^{3}$He reaction at Big-Bang nucleosynthesis energies

Tišma, Isabela; Lipoglavšek, Matej; Mihovilovič, Miha; Markelj, Sabina; Vencelj, Matjaž; Vesić, Jelena

doi:10.1140/epja/i2019-12816-1

Experimental cross section and angular distribution of the $^{2}$ H(p, $\gamma$ ) $^{3}$ He reaction at Big-Bang nucleosynthesis energies

Aug 26, 2019

7 pages

Published in:

Eur.Phys.J.A 55 (2019) 8, 137

Published: Aug 26, 2019

DOI:

10.1140/epja/i2019-12816-1

View in:

Nuclear Science References

reference search23 citations

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Abstract: (Springer)

The cross section for the

^{2}

H(p,

\gamma

)

^{3}

He reaction was measured in the energy range E = 47–210 keV, relevant for primordial nucleosynthesis. A proton beam was incident on two deuterated titanium targets. The angular distribution of emitted

\gamma

-rays was determined using two HPGe detectors, placed at

90^{\circ}

and

135^{\circ}

with respect to the incident beam direction. Results were compared with the latest ab initio theoretical calculation, including one- and many-body contributions. The predicted cross section and astrophysical S-factor are found to be in a very good agreement with measured values.

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Experimental cross section and angular distribution of the2^{2}2H(p, γ\gammaγ )3^{3}3He reaction at Big-Bang nucleosynthesis energies

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Experimental cross section and angular distribution of the $^{2}$ H(p, $\gamma$ ) $^{3}$ He reaction at Big-Bang nucleosynthesis energies