Measurement of the  keV resonance strength in the Si(p,)P reaction

Zs. Mátyus; L. Csedreki; Zs. Fülöp; Z. Halász; G. G. Kiss; T. Szücs; Á. Tóth; Gy. Gyürky

doi:10.1140/epja/s10050-024-01438-9

2023 Impact factor 2.6

Hadrons and Nuclei

Open Access

Eur. Phys. J. A (2024) 60: 218
https://doi.org/10.1140/epja/s10050-024-01438-9

Regular Article - Experimental Physics

Measurement of the $E_{p} = 416.9$ $E_\textrm{p}=416.9$ keV resonance strength in the $^{29}$ $^{29}$ Si(p, $γ$ $\gamma$ ) $^{30}$ $^{30}$ P reaction

Zs. Mátyus¹^,2, L. Csedreki¹, Zs. Fülöp¹, Z. Halász¹, G. G. Kiss¹, T. Szücs¹, Á. Tóth¹^,2 and Gy. Gyürky¹^a

¹ HUN-REN Institute for Nuclear Research (ATOMKI), 4001, Debrecen, Hungary
² Doctoral School of Physics, University of Debrecen, Egyetem tér 1., 4032, Debrecen, Hungary

^a gyurky@atomki.hu

Received: 11 July 2024
Accepted: 13 October 2024
Published online: 6 November 2024

Abstract

Silicon isotopic ratios measured in meteoritic presolar grains can provide useful information about the nucleosynthesis origin of these isotopes if the rates of nuclear reactions responsible for their production are known. One of the key reactions determining the Si isotopic abundances is $^{29}$ $^{29}$ Si(p, $γ$ $\gamma$ ) $^{30}$ $^{30}$ P. Its reaction rate is not known with sufficient precision due in part to some ambiguous resonance strength values. In the present work, the strength of the $E_{p}$ $E_\textrm{p}$ = 416.9 keV resonance has been measured with high precision using the activation technique. The new strength of $ω γ = 219 \pm$ $\omega \gamma = 219 \pm$ 16 meV can be used in updated reaction rate estimations and astrophysical models.

Communicated by Anu Kankainen.

© The Author(s) 2024

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