Figure 1

(a) Proton decay $Q$-value spectrum, in the inverse-kinematics ${}^{25}\mathrm{Al}(d,n){}^{26}\mathrm{Si}\to p+{}^{25}\mathrm{Al}$ reaction, measured with a ${\mathrm{CD}}_2$ target. The dashed line indicates the energy dependence of the particle detection efficiency in arbitrary units. (b) Beam-background-subtracted spectrum obtained by subtracting the ${}^{24}\mathrm{Mg}Q=12+$ beam contamination from the spectrum A. (c) Spectrum measured using a ${}^{12}\mathrm{C}$ target. (d) Proton decay $Q$-value spectrum, measured in the inverse-kinematics ${}^{24}\mathrm{Mg}(d,n){}^{25}\mathrm{Al}\to p+{}^{24}\mathrm{Mg}$ reaction while analyzing the corresponding kinematics.Reuse & Permissions

Figure 2

Reaction rates based on direct capture and the three resonances displayed in Table (see text).Reuse & Permissions

Figure 3

Proton density and temperature regions characterizing the proton-induced nucleosynthesis of ${}^{26}\mathrm{Al}{}^g$ and ${}^{26}\mathrm{Al}{}^m$ (see text). The thick lines represent the critical proton densities and temperatures, for which the ${}^{25}\mathrm{Al}(p,\gamma ){}^{26}\mathrm{Si}$ reaction reaches the same rate as the ${}^{25}\mathrm{Al}\beta$ decay. The thin line displays the critical proton densities and temperatures, for which the thermal equilibration rate equals the rate of destruction of ${}^{26}{\mathrm{Al}}^m$ (see text). The hatched area indicates the range of proton densities and temperatures assumed in a number of hydrodynamical nova models [33].Reuse & Permissions