Cross-section Measurement of the Kr82(p,γ)Rb83 Reaction in Inverse Kinematics
Physical Review C(2023)
Michigan State University
Abstract
Although most nuclei heavier than Fe are likely produced by the slow and the rapid neutron-capture ($s$ and $r$) processes, a number of medium-mass, proton-rich nuclei are thought to be produced via photo-disintegration ($\ensuremath{\gamma}$ process). To confirm this, one needs detailed statistical model calculations that are constrained by experimental input. In this work, the authors measured the ($\ensuremath{\gamma}$,$p$) reaction on the unstable ${}^{83}$Rb nucleus, via detailed balance, using the ${}^{82}$Kr($p$,$\ensuremath{\gamma}$)${}^{83}$Rb reaction with a ${}^{82}$Kr beam and detecting the produced $\ensuremath{\gamma}$ rays. The results put important constraints on the parameters of the statistical model calculations, allowing improved tests of the $\ensuremath{\gamma}$ process in hot stellar environments.
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