Nonlinear absorption of surface Plasmons and emission of electrons from metallic targets

D. B. Singh; Gagan Kumar; V. K. Tripathi

doi:10.1063/1.2799173

Nonlinear absorption of surface Plasmons and emission of electrons from metallic targets

D. B. Singh, Gagan Kumar, V. K. Tripathi

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

A large-amplitude surface plasma wave (SPW) over a metal-vacuum, interface Ohmically heats the electrons and undergoes nonlinear absorption. The attenuation rate increases with the local SPW amplitude. The enhanced electron temperature leads to stronger thermionic emission of electrons. At typical Nd:glass laser intensity I_L=7 GW/cm², if one takes the amplitude of the SPW to be ≈6 times the amplitude of the laser, one obtains the thermionic electron emission current density J=200 A/cm². However, the emission current density decreases with propagation distance at a much faster rate than the SPW amplitude and electron temperature.

Original language	English
Article number	102108
Journal	Physics of Plasmas
Volume	14
Issue number	10
DOIs	https://doi.org/10.1063/1.2799173
State	Published - 2007
Externally published	Yes

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abstract = "A large-amplitude surface plasma wave (SPW) over a metal-vacuum, interface Ohmically heats the electrons and undergoes nonlinear absorption. The attenuation rate increases with the local SPW amplitude. The enhanced electron temperature leads to stronger thermionic emission of electrons. At typical Nd:glass laser intensity IL=7 GW/cm2, if one takes the amplitude of the SPW to be ≈6 times the amplitude of the laser, one obtains the thermionic electron emission current density J=200 A/cm2. However, the emission current density decreases with propagation distance at a much faster rate than the SPW amplitude and electron temperature.",

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Nonlinear absorption of surface Plasmons and emission of electrons from metallic targets

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