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Multi-kiloampere, electron-beam generation using metal photo-cathodes driven by ArF and KrF lasers

Abstract

An electron-beam-pumped laser operating at ArF (193 nm) or KrF (248 nm) producing 35 MW (3.5 J in 100 ns) has been used to illuminate a micro-machined aluminum cathode. The cathode was pulsed to 2.75 MV at fields of 185 kV/cm (15-cm AK gap) using REX (a 4-MV, 5-kA, 85-ns) pulsed-diode machine. The extracted current versus incident laser power (the quantum efficiency) was measured for KrF at 5x10{sup -5} and for ArF which was significantly higher at 1x10{sup -3}. Current densities of 100 A/cm{sup 2} and total currents of 2 kA have been achieved, the latter by increasing the cathode area in proportion to the laser power. (author). 8 figs., 14 refs.
Authors:
Carlson, R L; Moya, S S; Ridlon, R N; Seitz, G J; Shurter, R P [1] 
  1. Los Alamos Natl. Lab., Los Alamos, NM (United States)
Publication Date:
Dec 31, 1996
Product Type:
Conference
Report Number:
INIS-CZ-0002; CONF-960610-
Reference Number:
SCA: 661220; PA: AIX-28:055630; EDB-97:113950; SN: 97001834635
Resource Relation:
Conference: BEAMS `96: 11. international conference on high-power particle beams, Prague (Czech Republic), 10-14 Jun 1996; Other Information: PBD: 1996; Related Information: Is Part Of Beams `96. Proceedings of the 11th international conference on high power particle beams. Vol. I; Jungwirth, K.; Ullschmied, J. [eds.]; PB: [684] p.
Subject:
66 PHYSICS; BEAM PRODUCTION; PHOTOCATHODES; ELECTRON BEAMS; KILO AMP BEAM CURRENTS; OPTICAL PUMPING; ALUMINIUM; EXCIMER LASERS; PHOTOELECTRIC EMISSION; QUANTUM EFFICIENCY; RELATIVISTIC RANGE
Sponsoring Organizations:
USDOE, Washington, DC (United States)
OSTI ID:
511043
Research Organizations:
Ceskoslovenska Akademie Ved, Prague (Czech Republic). Ustav Fyziky Plazmatu
Country of Origin:
Czech Republic
Language:
English
Other Identifying Numbers:
Other: ON: DE97637662; ISBN 80-902250-3-9; TRN: CZ9726713055630
Availability:
INIS; OSTI as DE97637662
Submitting Site:
INIS
Size:
pp. 188-191
Announcement Date:

Citation Formats

Carlson, R L, Moya, S S, Ridlon, R N, Seitz, G J, and Shurter, R P. Multi-kiloampere, electron-beam generation using metal photo-cathodes driven by ArF and KrF lasers. Czech Republic: N. p., 1996. Web.
Carlson, R L, Moya, S S, Ridlon, R N, Seitz, G J, & Shurter, R P. Multi-kiloampere, electron-beam generation using metal photo-cathodes driven by ArF and KrF lasers. Czech Republic.
Carlson, R L, Moya, S S, Ridlon, R N, Seitz, G J, and Shurter, R P. 1996. "Multi-kiloampere, electron-beam generation using metal photo-cathodes driven by ArF and KrF lasers." Czech Republic.
@misc{etde_511043,
title = {Multi-kiloampere, electron-beam generation using metal photo-cathodes driven by ArF and KrF lasers}
author = {Carlson, R L, Moya, S S, Ridlon, R N, Seitz, G J, and Shurter, R P}
abstractNote = {An electron-beam-pumped laser operating at ArF (193 nm) or KrF (248 nm) producing 35 MW (3.5 J in 100 ns) has been used to illuminate a micro-machined aluminum cathode. The cathode was pulsed to 2.75 MV at fields of 185 kV/cm (15-cm AK gap) using REX (a 4-MV, 5-kA, 85-ns) pulsed-diode machine. The extracted current versus incident laser power (the quantum efficiency) was measured for KrF at 5x10{sup -5} and for ArF which was significantly higher at 1x10{sup -3}. Current densities of 100 A/cm{sup 2} and total currents of 2 kA have been achieved, the latter by increasing the cathode area in proportion to the laser power. (author). 8 figs., 14 refs.}
place = {Czech Republic}
year = {1996}
month = {Dec}
}