Accession Number:

ADA181651

Title:

Relativistic Self Focusing of Short Pulse Radiation Beams in Plasmas.

Descriptive Note:

Interim rept.,

Corporate Author:

BERKELEY SCHOLARS INC SPRINGFIELD VA

Personal Author(s):

Report Date:

1987-05-15

Pagination or Media Count:

39.0

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 oscillators and does not diffract. Under certain conditions, the radiation beam propagates through the plasma with a constant radius envelope. Keywords Self focusing Laser plasma interactions Radiation propagation Envelope equation Relativistic plasma.

Subject Categories:

  • Electricity and Magnetism
  • Plasma Physics and Magnetohydrodynamics
  • Fusion Devices (Thermonuclear)

Distribution Statement:

APPROVED FOR PUBLIC RELEASE