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Title: Flash x radiography of laser-accelerated foils

Abstract

A full account is given of an experimental series in which higher density regions of ablatively accelerated planar targets were directly imaged by flash x-radiography. Flash x-radiography has previously been used to obtain images of pellet implosions and planar targets. For planar target geometry, x-radiography viewing along the target plane (side-on) provides simultaneous access to the front and rear surfaces, as well as the dense middle, of the accelerated targets. The measurements reported here provide clear indications of the symmetrization of laser nonuniformities and direct observation of the double foil interaction. The x-radiographic results are in general agreement with earlier studies at NRL concerning target motion, ablation pressures, and velocity uniformities of the ablatively accelerated targets. We report here the results of x-ray backlighting studies of planar foil targets of constant areal mass accelerated with the Pharos II laser system.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Naval Research Lab., Washington, DC (USA)
OSTI Identifier:
6721857
Report Number(s):
NRL-MR-5532
ON: DE87005558
DOE Contract Number:  
AC08-80DP40124
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; LASER TARGETS; ACCELERATION; X-RAY RADIOGRAPHY; ABLATION; FOILS; IRRADIATION; VELOCITY; INDUSTRIAL RADIOGRAPHY; TARGETS; 700208* - Fusion Power Plant Technology- Inertial Confinement Technology

Citation Formats

Whitlock, R R, Obenschain, S P, Grun, J, Stamper, J A, Sprague, J A, Sweeney, B V, Ripin, B H, and Craxton, R S. Flash x radiography of laser-accelerated foils. United States: N. p., 1986. Web.
Whitlock, R R, Obenschain, S P, Grun, J, Stamper, J A, Sprague, J A, Sweeney, B V, Ripin, B H, & Craxton, R S. Flash x radiography of laser-accelerated foils. United States.
Whitlock, R R, Obenschain, S P, Grun, J, Stamper, J A, Sprague, J A, Sweeney, B V, Ripin, B H, and Craxton, R S. Fri . "Flash x radiography of laser-accelerated foils". United States.
@article{osti_6721857,
title = {Flash x radiography of laser-accelerated foils},
author = {Whitlock, R R and Obenschain, S P and Grun, J and Stamper, J A and Sprague, J A and Sweeney, B V and Ripin, B H and Craxton, R S},
abstractNote = {A full account is given of an experimental series in which higher density regions of ablatively accelerated planar targets were directly imaged by flash x-radiography. Flash x-radiography has previously been used to obtain images of pellet implosions and planar targets. For planar target geometry, x-radiography viewing along the target plane (side-on) provides simultaneous access to the front and rear surfaces, as well as the dense middle, of the accelerated targets. The measurements reported here provide clear indications of the symmetrization of laser nonuniformities and direct observation of the double foil interaction. The x-radiographic results are in general agreement with earlier studies at NRL concerning target motion, ablation pressures, and velocity uniformities of the ablatively accelerated targets. We report here the results of x-ray backlighting studies of planar foil targets of constant areal mass accelerated with the Pharos II laser system.},
doi = {},
url = {https://www.osti.gov/biblio/6721857}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1986},
month = {11}
}

Technical Report:
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