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Content Provider | IEEE Xplore Digital Library |
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Author | Carlson, R.L. Quicksilver, J.R. Ridlon, R.N. Hughes, T.P. |
Copyright Year | 2001 |
Description | Author affiliation: Los Alamos Nat. Lab., NM, USA (Carlson, R.L.) |
Abstract | Summary form only given, as follows. A reliable and repeatable electron beam pumped ArF laser system to drive bare aluminum metal photo-cathodes is described. The system consists of a seven stage Marx generator charged to 65 kV/stage that in-turn pulse charges a 150-ns-long, 5.5-ohmm water PFL to voltages as high as 750 kV. The PFL utilizes a low-jitter, self-breaking SF/sub 6/ switch and is terminated in an adjustable radial resistor to match varying diode impedances and voltages from 250- to 375-kV. The optimized diode geometry consists of a flat velvet emitter (7.6 cm high /spl times/ 98 cm long) operated at 275 kV with an AK gap of 3.3 cm. The goal of attaining this 10-ohmm diode geometry at 275 kV was to match a sly developed thyratron based, 11-ohmm, 300-kV Blumlein driver. The velvet diode delivers 28 kA of current through a 3-mil Kapton foil into the 6.5-cm-diam by 100-cm-long laser gas region at 1500 torr. In order to achieve long foil lifetimes /spl sim/500 pulses, a pair of Helmholtz coils are used to guide, compress, and profile the electron beam. The output laser energy, power, and spatial profile from a stable resonator configuration have been shown to be reproducible to less than 5 percent over any 50 shot sequence without any adjustment to the system. |
Sponsorship | Plasma Sci. & Applications Committee |
File Size | 71336 |
File Format | |
ISBN | 0780371410 |
DOI | 10.1109/PPPS.2001.961085 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2001-06-17 |
Publisher Place | USA |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Argon Diodes Pump lasers Electron beams Voltage Switches Gas lasers Laser excitation Aluminum Optical pulse generation |
Content Type | Text |
Resource Type | Article |
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