DocumentCode :
1217447
Title :
Relativistic Self-Focusing of Short-Pulse Radiation Beams in Plasmas
Author :
Sprangle, P. ; Tang, Cha-Mei ; Esarey, E.
Volume :
15
Issue :
2
fYear :
1987
fDate :
4/1/1987 12:00:00 AM
Firstpage :
145
Lastpage :
153
Abstract :
An envelope equation is derived which describes the radial evolution of a radiation beam propagating through a plasma. The radiation envelope equation contains a defocusing term due to diffraction spreading and a focusing term due to relativistic oscillations of the plasma electrons. The case of a constant density background plasma is analyzed in detail and an expression for a critical laser power is derived. For powers exceeding the critical power, the radiation envelope oscillates and does not diffract. Under certain conditions the radiation beam propagates through the plasma with a constant radius envelope.
Keywords :
Acceleration; Acoustic beams; Electrons; Frequency; Laser beams; Particle beams; Plasma accelerators; Plasma density; Plasma properties; Plasma waves;
fLanguage :
English
Journal_Title :
Plasma Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0093-3813
Type :
jour
DOI :
10.1109/TPS.1987.4316677
Filename :
4316677
Link To Document :
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