Determination of cross section for Ar+ - He elastic collisions from drift velocity data: Monte Carlo simulation

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Authors	TRUNEC David
Year of publication	1995
Type	Article in Periodical
Magazine / Source	International Journal of Mass Spectrometry and Ion Processes
MU Faculty or unit	Faculty of Science
Citation
Field	Plasma physics
Description	The Monte Carlo simulation of the motion of Ar+ ions in He buffer gas in a uniform electric field has been carried out. The total cross-section for elastic collisions between the Ar+ ion and the He atom was considered in the form sigma(T)(v) = C/v where v is the relative velocity of the Ar+ ion and the He atom. The constant C was adjusted in such a way that the calculated values of the drift velocity of the Ar+ ion agree with the corresponding experimentally measured values. The cross-section was also calculated from the potential between the Ar+ ion and the He atom by the Jeffreys-Wentzel-Kramers-Brillouin (JWKB) approximation in order to check the results from the Monte Carlo simulation.
Related projects:	Study of plasmachemical reactions in non-isothermic low pressure plasma and its interaction with the surface of solid substrates