Measurement of the Ep=416.9 keV resonance strength in the 29Si(p,γ)30P reaction

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 Si(p, γ...

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Veröffentlicht in:	The European physical journal. A, Hadrons and nuclei Hadrons and nuclei, 2024-11, Vol.60 (11)
Hauptverfasser:	Mátyus, Zs, Csedreki, L., Fülöp, Zs, Halász, Z., Kiss, G. G., Szücs, T., Tóth, Á., Gyürky, Gy
Format:	Artikel
Sprache:	eng
Schlagworte:	Astronomical models Hadrons Heavy Ions Isotope ratios Nuclear Fusion Nuclear Physics Nuclear reactions Particle and Nuclear Physics Physics Physics and Astronomy Presolar grains Regular Article - Experimental Physics Resonance Silicon isotopes
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Zusammenfassung:	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 Si(p, γ ) 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 = 416.9 keV resonance has been measured with high precision using the activation technique. The new strength of ω γ = 219 ± 16 meV can be used in updated reaction rate estimations and astrophysical models.
ISSN:	1434-6001 1434-601X
DOI:	10.1140/epja/s10050-024-01438-9