The mechanism of the ¹⁶O(p,p′α)¹²C and ²⁰Ne(p,p′α)¹⁶O reactions at 13 MeV

Abstract

The mechanisms of the ¹⁶O(p,p′α)¹²C and ²⁰Ne(p,p′α)¹⁶O reactions have been studied for an incident proton energy of 13.1 MeV. It is shown that in ¹⁶O, about 75% of these events lead through levels in ¹³N and the other 25% lead through levels in ¹⁶O, there being no need to invoke direct interaction mechanisms. In ²⁰Ne, there is slight evidence that the reactions lead through levels in ¹⁶O and ¹⁹F, but firm conclusions cannot be drawn in this case.