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Updated: May 13, 2026

Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses
Published on: July 2, 2012
Plasma electron source for the generation of wide-aperture pulsed beam at forevacuum pressures
E Oks1, V Burdovitsin, A Medovnik
1Tomsk State University of Control Systems and Radioelectronics, Tomsk 634050, Russia.
Abstract:
This article reports on design and application of wide-aperture pulsed beam source, based on hollow cathode discharge. The source is intended for electron beam generation in pressure range 2-15 Pa. Multi-aperture extraction system, used in a source, provided beam cross-section uniformity of 10% on diameter 40 mm. The limiting values of the current density, pulse duration, and accelerating voltage are 350 mA∕cm(2), 250 μs, and 10 kV, respectively. These parameters are sufficient for surface modification of various materials, including non-conducting matters.
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