Charge-changing cross sections in boron of 7-MeVB11recoils from the elastic scattering of deuterons

Abstract

Equilibrium and pre-equilibrium charge-state distributions have been measured for~~B recoils at a velocity of 11. 1x 10s cmf sec from~~B(d,d) elastic scattering in natural boron targets. A coupled set of linear differential equations describing the capture and loss of electrons has been derived for ions recoiling from nuclear processes in solids. It has been used to obtain electron-capture and -loss cross sections from the B recoil data. The results are consistent with the existence of very little two-electron capture or loss and, when compared with previous results in gaseous media, do not show any pronounced effects of residual-ion excitation.