Effect of beam energy straggling on resonant yield in thin gas targets: The cases ${}^{22}$Ne(p,γ)${}^{23}$Na and ${}^{14}$N(p,γ)${}^{15}$O

Abstract

When deriving resonance strengths using the thick-target yield approximation, for very narrow resonances it may be necessary to take beam energy straggling into account. This applies to gas targets of a few keV width, especially if there is some additional structure in target stoichiometry or detection efficiency. The correction for this effect is shown and tested on recent studies of narrow resonances in the ${}^{22}$Ne(p,γ)${}^{23}$Na and ${}^{14}$N(p,γ)${}^{15}$O reactions.

arXiv commentSubmitted to Europhys. Lett

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• First direct limit on the 334 keV resonance strength in the ${}^{22}$Ne(α,γ)${}^{26}$Mg reaction
• Exploring Stars in Underground Laboratories: Challenges and Solutions
• Background in $\gamma$-ray detectors and carbon beam tests in the Felsenkeller shallow-underground accelerator laboratory
• Underground Measurements of Nuclear Reaction Cross-Sections Relevant to AGB Stars
• Asymptotic normalization coefficients from transfer reaction and R-martix analysis of direct capture in ${}^{22}$Ne(p,$\gamma$)${}^{23}$Na reaction