Title of article
Photocathodes: the state of the art and some news
Author/Authors
Boscolo، نويسنده , , I. and Michelato، نويسنده , , P.، نويسنده ,
Pages
5
From page
389
To page
393
Abstract
The present cesium telluride cathodes have the capability to provide, for months, trains of picosecond pulses carrying a charge equal/higher than 10 nanocoulomb, for a total charge higher than the microcoulomb. However, they are very delicate. A possible way to increase their robustness is by covering them with a protective film of nanostructured carbon. Ferroelectric ceramics, as possible new robust photocathodes, showed an interesting level of emission with 532 nm–25 ps laser pulses.
Keywords
Photocathode , Alkali , Protective film , Ceramic , Auger , Laser
Journal title
Astroparticle Physics
Record number
2012066
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