Charge Exchange Cross Sections for Noble Gas Ions and N2 between 0.2 and 5.0 keV

Abstract

Charge transfer of an electron from a neutral atom to an ion is a fundamental interaction that plays a dominant role in the energy balance of atmospheric and astrophysical plasmas. The present investigation measured the charge exchange cross sections of noble gas ions (He + , Ne + , Ar + , Kr + ) with N 2 in the intermediate energy range 0.2–5.0 keV. The systems were chosen because there remains a lack of consensus amongst previous measurements and regions where there were no previous measurements. A description of the mechanical design for an electrically floated gas cell is described herein.

He++N2 Charge Transfer Reaction: An Ab initio Analysis

“…It was assumed to involve the CT (He( 1 S)+N 2 + ($${2^2 {\rm{\Sigma }}_u^ + }$$ , v =3)), followed by dissociation (He( 1 S)+N + ( 3 P)+N( 4 S)) [8] . Recently, Bromley et al [14] . have measured the CT cross sections in E coll range of 0.2–5.0 keV.…”

“…It was assumed to involve the CT (He( 1 S) + N 2 + (2 2 S þ u , v = 3)), followed by dissociation (He( 1 S) + N + ( 3 P) + N( 4 S)). [8] Recently, Bromley et al [14] have measured the CT cross sections in E coll range of 0.2-5.0 keV. A review of experiments carried out in this collision energy range can also be found there.…”