Proton decays from $\alpha$-unbound states in $^{22}$Mg and the $^{18}$Ne($\alpha, p_{0}$)$^{21}$Na cross section

J. W. Brümmer; P. Adsley; T. Rauscher; F. D. Smit; C. P. Brits; M. Köhne; N. A. Khumalo; K. C. W. Li; D. J. Marín-Lámbarri; N. J. Mukwevho; F. Nemulodi; R. Neveling; P. Papka; L. Pellegri; V. Pesudo; B. M. Rebeiro; G. F. Steyn; W. Yahia-Cherif

arXiv · 2109.06537

Proton decays from $\alpha$-unbound states in $^{22}$Mg and the $^{18}$Ne($\alpha, p_{0}$)$^{21}$Na cross section

J. W. Brümmer·P. Adsley·T. Rauscher·F. D. Smit·C. P. Brits·M. Köhne·N. A. Khumalo·K. C. W. Li·D. J. Marín-Lámbarri·N. J. Mukwevho·F. Nemulodi·R. Neveling·P. Papka·L. Pellegri·V. Pesudo·B. M. Rebeiro·G. F. Steyn·W. Yahia-Cherif

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Abstract

This paper examines the $^{18}$Ne($\alpha, p_{0}$)$^{21}$Na cross-section relevant in X-ray bursts. The study was performed with the K600 magnetic spectrometer in coincidence with the CAKE, a silicon detector array, at iThemba LABS in Cape Town, South Africa. A 100-MeV proton beam was impinged on a $^{24}$Mg target to study the $^{24}$Mg($p,t$)$^{22}$Mg reaction. The triton ejectiles were momentum-analysed with the magnetic spectrometer and proton decays from the $^{22}$Mg recoil nucleus to the ground state of $^{21}$Na and various excited states thereof were detected with the CAKE. In doing so, we were able to compare our results to previous direct and indirect measurements of the $^{18}$Ne($\alpha, p$)$^{21}$Na reaction.

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J. W. Brümmer, P. Adsley, T. Rauscher, F. D. Smit, C. P. Brits, M. Köhne, N. A. Khumalo, K. C. W. Li, D. J. Marín-Lámbarri, N. J. Mukwevho, F. Nemulodi, R. Neveling, P. Papka, L. Pellegri, V. Pesudo, B. M. Rebeiro, G. F. Steyn, W. Yahia-Cherif. 2021-09-14. Proton decays from $\alpha$-unbound states in $^{22}$Mg and the $^{18}$Ne($\alpha, p_{0}$)$^{21}$Na cross section. https://arxiv.org/abs/2109.06537

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