Proton-Impact Excitations between the n=2 Fine-Structure Levels of Hydrogenic Ions

Abstract

A semiclassical method is adopted to solve the close coupling equations the proton-impact l-mixing collisions between the n=2 fine-structure levels of hydrogenic ions. By use of the semiclassical method, the cross sections in a quantal calculation are well reproduced, and the calculation becomes efficient and tractable. Behaviors of the total and partial cross sections are discussed in detail.