Elastic and Inelastic Scattering of Low-Velocity Ions: Ne+ in A, A+ in Ne, and A+ in A

Abstract

Elastic and charge-exchange cross sections have been measured in the energy range 4 to 400 ev for Ne+ in A, A+ in Ne, and A+ in A. Charge exchange was observed only for A+ in A. No evidence was found for the existence of the diatomic ion NeA+. Constants for empirical potential functions have been evaluated and the functions tabulated.

Instrument-independent cad spectral databases: absolute cross-section measurements in QQQ instruments

“…Together with our results for Ar+{Ar,Ar)Ar+, figure 5 also summarizes experimental [28][29][30][31][32][33][34][35][36][37][38][39][40][41] and theoretical [42][43][44][45][46][47] results for this reaction from the literature [48]. Prior to our work it was not clear which theoretical model one could or should use to obtain reliable estimates of UE values for use in target thickness calibrations in the 5-60 e V range of collision energies, the range typically used for CAD experiments.…”

“…5, data labeled HES [34), Z (28), H (35), KPS [37], DSEG [29], FS [36]). For the data labeled C [31], the UE values are sig. 234 nificantIy lower than those of the Dewangan line (labeled D) [43] and of other workers; however, the slope of his UE vs. E plot shows substantially the same u(E) as that of the Dewangan line.…”

Numerical Modeling of Electrodeless Electric Thruster by Ion Cyclotron Resonance/Ponderomotive Acceleration

“…However, in the previous paper, we inferred the relation between α and I from Fig. 2 of reference [8]. Subsequently obtained I values are indicated by the "+" symbols in the bottom panel of Fig.…”

“…The solid red and dashed blue lines in each panel show I(ε) for the elastic collisions and charge exchange, respectively. These crosssections are used in our calculations, and are obtained by fitting the experimental data [7,8] which are indicated in the figures by the empty circles and triangles. The "+" symbols in the bottom panel show the experimental data used in our previous paper [4].…”

“…In references [7,8], the authors obtained the experimental data for α which is the cross-section in cm 2 of a cubic centimeter of gas at 0 • C and a pressure of 1 mmHg. Reference [7] showed the relation between α and I to be I = 10 −20 α/3.536 m 2 .…”