On the anomaly in the cross sections for electron loss and capture by multiply charged ions in neon

Abstract

The electron loss and capture cross sections for multiply charged He, N, Ne and Ar ions at velocities V from 3*108 to 109 cm s-1 in helium, nitrogen, neon and argon have been measured. It has been found that due to a higher average velocity of outer electrons in Ne atoms the dependences of these cross sections on nuclear charge of target atoms at V approximately 109 cm s-1 become nonmonotonic: the values sigma i'i+1 in neon become smaller and sigma i,i-1 greater than in nitrogen and argon.