Accession Number:

ADA482527

Title:

Nonlinear Modelling of Start-Up Phase Pressure Spectra from Optically Smoothed Induced Spatial Incoherence Laser Imprint

Descriptive Note:

Journal article

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC PLASMA PHYSICS DIV

Personal Author(s):

Report Date:

2005-01-01

Pagination or Media Count:

18.0

Abstract:

The spectrum of early time pressure perturbations, due to optically smoothed induced spatial incoherence ISI laser imprint, is computed for a planar target using a forced, dissipative model. The time-dependent ISI laser deposition is computed using a time-dependent electromagnetic full wave Maxwell code. It is found that the pressure spectrum evolves into a power law in which spectral power is transferred from large to smaller scales through a nonlinear cascade process. The model results are compared with experimental observations.

Subject Categories:

  • Operations Research
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE