INJECTION, BEAM FORMING, AND PARAMETER CONTROL OF SOLID MICROPARTICLES ACCELERATED IN THE ZG-8 ELECTROSTATIC GENERATOR

The EG-8 electrostatic generator (at the RINPh MSU) intended for studi es involving hypervelocity solid particles of a micron size was update d. 10(3) s(-1)-intensity beams of accelerated Al and Ti micron-size pa rticles focused into a 10-mm-diameter spot with a approximate to 20-mm halo were obtained. For accelerating voltages within a 1.5-2.5 MV int erval, the average particle velocity was approximate to 5-7 km/s. An e fficient charged particle injector, a system for forming an intense pa rticle beam in the accelerating tube, and a system for controlling par ameters of the accelerated particles and for separating the particles in velocity and charge are described. Experimental results of the effe ct of particle impacts upon a substrate surface versus the particle ve locity are provided.