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Proton decays from α-unbound states in ²²Mg and the ¹⁸Ne(α, p₀)²¹Na cross section

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arxiv 2109.06537 v4 pith:PZS5NHKU submitted 2021-09-14 nucl-ex

Proton decays from α-unbound states in ²²Mg and the ¹⁸Ne(α, p₀)²¹Na cross section

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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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