Flash x radiography of laser-accelerated foils
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.
- Research Organization:
- Naval Research Lab., Washington, DC (USA)
- DOE Contract Number:
- AC08-80DP40124
- OSTI ID:
- 6721857
- Report Number(s):
- NRL-MR-5532; ON: DE87005558
- Country of Publication:
- United States
- Language:
- English
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Flash x radiography of laser-accelerated targets
Flash x radiography of laser-accelerated targets