Share Email Print

Proceedings Paper

Bright Photoelectron Beams Emitted From Excimer-Laser Illuminated LaB6
Author(s): Peter E. Oettinger
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Lanthanum hexaboride has traditionally been used as a high-temperature thermionic emitter of electrons. This material, whose work function for a sintered multicrystalline composition is nominally 2.6 eV, appears to be a reasonably good photoemitter when irradiated by UV light. A quantum efficiency of 10-3 was recorded for photoemission at a 193 nm (ArF) incident wavelength. At least 20 A/cm2 were observed at 193 nm, 248 nm (KrF) and 308 (XeC1). Beam brightness appears to be a minimum of 4 x 105 A/cm2-rad2 at 248 nm.

Paper Details

Date Published: 16 December 1988
PDF: 6 pages
Proc. SPIE 0998, Excimer Beam Applications, (16 December 1988); doi: 10.1117/12.960205
Show Author Affiliations
Peter E. Oettinger, Thermo Electron Technologies Corporation (United States)

Published in SPIE Proceedings Vol. 0998:
Excimer Beam Applications
Anthony N. Pirri; Bernhard P. Piwczyk, Editor(s)

© SPIE. Terms of Use
Back to Top