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Abstract The main object of this thesis is the study of the flow of gases under high vacuum and high electrical potentials with ion beams of certain gases which normally flow in accelerators and ion injectors namely hydrogen helilim-4 nitrogen and air a study has been carried out for the theoretical basis of the methods of calculations of the flow rate of a gas flow conductance and the iransnission probability for molecular flow through different sections. And ducts also the viscous flow and the flow in the transition region have been studied an apparatus is designed and constructed to suit the specific conditions for the investigation of the behavior of gas flow under conditions of ion beam and high electrIcal potentials a special gas handling system developed for feeding different gases is employed in the experiment. |