Field-enhanced photoemission from metals and coated materials

Author

Jensen, Kevin L. ; Feldman, D.W. ; Moody, N.A. ; Shaw, J.L. ; Yater, J.E. ; Shea, P. G O

Author_Institution

Vacuum Electron. Branch, Naval Res. Lab., Washington, DC, USA

fYear

2005

Firstpage

3

Lastpage

4

Abstract

Photocathode performance is modelled to account for issues that affect electron transport. Theoretical models of field, thermal, and surface effects on photoemission from sub-monolayer low work function coated surfaces as a function of laser parameters, temperature, and applied field are discussed. A time-dependent model of laser heating, thermal propagation, and photoemission and the relative importance of field, thermal, and photoemission contribution are presented.

Keywords

laser beam effects; metals; photocathodes; photoemission; work function; applied field; coated materials; coated surfaces; field effects; field-enhanced photoemission; laser heating; laser parameters; metals; photocathode performance; submonolayer low work function surface; surface effects; thermal effects; thermal propagation; time-dependent model; Cathodes; Electrons; Heating; Inorganic materials; Laser modes; Laser theory; Optical materials; Photoelectricity; Surface emitting lasers; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Nanoelectronics Conference, 2005. IVNC 2005. Technical Digest of the 18th International

Print_ISBN

0-7803-8397-4

Type

conf

DOI

10.1109/IVNC.2005.1619455

Filename

1619455