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Study of self-preionized XeCl electron-avalanched discharges

Technical Report:

Abstract

Preionization of laser gases has proved to be an effective means of initiating a homogeneous discharge at gas pressures higher than one atmosphere, and some papers have been published on preionization requirements for obtaining a homogeneous discharge. Several experimental approaches have been carried out regarding the development of preionization sources. One of the simplest is to use a pin array on the cathode surface to produce a corona discharge which emits photoionizing radiation. By applying a fairly slow-rising discharge voltage with a rise time of about 1 microsec (from 10% to 90%) to this kind of electrode, over 1 J of XeCl laser output energy per pulse, with a pulse duration of about 120 ns (FWHM) and a spot size of 2x7 square centimeters in the near field, was obtained. The device is attractive in its simplicity, as it has neither an additional preionization circuit nor a low-inductance switch between the discharge chamber and pulse-forming line, although the laser efficiency may be rather low. In this paper, based on previous works, the conditions necessary for the formation of a spatially diffuse discharge in this kind of electrode configuration are analyzed, and some characteristics of the discharge at the streamer-formation stage  More>>
Publication Date:
Apr 01, 1991
Product Type:
Technical Report
Report Number:
ENEA-RT-INN-90-55; RT/INN-90-55
Reference Number:
SCA: 426002; PA: ITA-91:002071; SN: 92000621786
Resource Relation:
Other Information: PBD: Apr 1991
Subject:
42 ENGINEERING; EXCIMER LASERS; PHOTOIONIZATION; XENON CHLORIDES; ELECTRICAL PUMPING; CORONA DISCHARGES; PHOTOCATHODES; DESIGN; PERFORMANCE; EXPERIMENTAL DATA; 426002; LASERS AND MASERS
OSTI ID:
10106806
Research Organizations:
ENEA, Frascati (Italy). Dipt. Sviluppo Tecnologie di Punta
Country of Origin:
Italy
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 1120-558X; Other: ON: DE92743978; TRN: 91:002071
Availability:
OSTI; NTIS (US Sales Only)
Submitting Site:
ITA
Size:
24 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Letardi, T, Bollanti, S, Di Lazzaro, P, Flora, F, and Zheng, C E. Study of self-preionized XeCl electron-avalanched discharges. Italy: N. p., 1991. Web.
Letardi, T, Bollanti, S, Di Lazzaro, P, Flora, F, & Zheng, C E. Study of self-preionized XeCl electron-avalanched discharges. Italy.
Letardi, T, Bollanti, S, Di Lazzaro, P, Flora, F, and Zheng, C E. 1991. "Study of self-preionized XeCl electron-avalanched discharges." Italy.
@misc{etde_10106806,
title = {Study of self-preionized XeCl electron-avalanched discharges}
author = {Letardi, T, Bollanti, S, Di Lazzaro, P, Flora, F, and Zheng, C E}
abstractNote = {Preionization of laser gases has proved to be an effective means of initiating a homogeneous discharge at gas pressures higher than one atmosphere, and some papers have been published on preionization requirements for obtaining a homogeneous discharge. Several experimental approaches have been carried out regarding the development of preionization sources. One of the simplest is to use a pin array on the cathode surface to produce a corona discharge which emits photoionizing radiation. By applying a fairly slow-rising discharge voltage with a rise time of about 1 microsec (from 10% to 90%) to this kind of electrode, over 1 J of XeCl laser output energy per pulse, with a pulse duration of about 120 ns (FWHM) and a spot size of 2x7 square centimeters in the near field, was obtained. The device is attractive in its simplicity, as it has neither an additional preionization circuit nor a low-inductance switch between the discharge chamber and pulse-forming line, although the laser efficiency may be rather low. In this paper, based on previous works, the conditions necessary for the formation of a spatially diffuse discharge in this kind of electrode configuration are analyzed, and some characteristics of the discharge at the streamer-formation stage are calculated and compared with the experimental observations.}
place = {Italy}
year = {1991}
month = {Apr}
}