Abstract
Recent results for the inclusive reaction 93 Nb(p ,α ) between incident energies of 65 and 160 MeV are shown to be consistent with a competition between knockout and pickup. The pre-equilibrium statistical multistep process terminates in either mechanism. The incident-energy dependence of the reaction reflects the dynamics of the participating reaction components. It is consequently not surprising to observe knockout to dominate at the lower and highest incident energies, with pickup very prominent in between.
Highlights
The mechanism of the (p,α) reaction is of considerable interest
Gadioli et al [1] point out that apart from a pickup process, knockout of α-clusters should be a prominent reaction mechanism. They are unable to show a difference in predicted cross section and analyzing power angular distributions for their specific target species and incident energy range, it is implied that the analyzing power could in general be a valuable observable to explore details of the mechanism
In comprehensive studies [3,4,5] of the (p,α) reaction to the continuum of excitation on various targets at incident energies in the range of interest from 65 to 200 MeV, with one notable exception, we identify the knockout process as terminating a statistical multistep mechanism. In these studies, analyzing power angular distributions at various emission energies are very sensitive to identify both the intranuclear statistical N-N multisteps, and the terminating process leading to emitted α-particles
Summary
Gadioli et al [1] point out that apart from a pickup process, knockout of α-clusters should be a prominent reaction mechanism. They are unable to show a difference in predicted cross section and analyzing power angular distributions for their specific target species and incident energy range, it is implied that the analyzing power could in general be a valuable observable to explore details of the mechanism. In comprehensive studies [3,4,5] of the (p,α) reaction to the continuum of excitation on various targets at incident energies in the range of interest from 65 to 200 MeV, with one notable exception, we identify the knockout process as terminating a statistical multistep mechanism. In this paper we discuss this surprising behaviour and we offer an explanation for the strange incident-energy trend
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
