Behavior of the photoelectron boundary layer with sinusoidal time dependence

Author

Carron, N.J.

Author_Institution

Mission Res. Corp., Santa Barbara, CA, USA

Volume

29

Issue

6

fYear

2001

fDate

12/1/2001 12:00:00 AM

Firstpage

935

Lastpage

942

Abstract

At high-incident photon intensities (X-rays, UV, or visible), a photoelectron boundary layer can form. This layer´s properties, and especially its electric dipole moment, change in a nonlinear way as the light intensity varies in time. We show here that the dipole moment obeys an exact dynamical equation, which can be used as the basis for analytic approximation schemes for a driver of arbitrary time dependence. An approximate analytic solution for a sinusoidally oscillating light source is presented, and compared with a particle-pusher numerical simulation. Scaling laws are extracted from the analytic solution

Keywords

boundary layers; laser beam effects; numerical analysis; photoemission; space charge; UV photons; X-ray photons; analytic approximation schemes; analytic solution; approximate analytic solution; arbitrary time dependence; dipole moment; dynamical equation; electric dipole moment; high-incident photon intensities; light intensity; particle-pusher numerical simulation; photoelectron boundary layer; scaling laws; sinusoidal time dependence; sinusoidally oscillating light source; visible photons; EMP radiation effects; Electromagnetic fields; Electron beams; Electron emission; Energy measurement; Light sources; Nonlinear equations; Numerical simulation; Photovoltaic effects; X-rays;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.974982

Filename

974982