Continuum distorted waves: capture into the nth shell

The continuum distorted-wave method of Cheshire (1964) is applied to B Z+ +H(1s) to B (Z-1)+ (n)H + , where the projectile is fully stripped. Using parabolic coordinates, a closed expression is obtained for the prior cross section summed over all normal degeneracies, the only numerical analysis being integration over the transverse component of the change in linear momentum. Results are presented for Z in (1,6) and n in (1,15) at nu =5*10 8 cm s -1 to illustrate deviations from Z 3 and n -3 laws.