An x ray technique for precision laser beam synchronization

Details An x ray technique for precision laser beam synchronization An x ray technique for precision laser beam synchronization

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994htpd.conft...8l&link_type=abstract

Presented at the 10th Topical Conference on High-Temperature Plasma Diagnostics, Rochester, NY, 8-12 May 1994

Physics

Laser Beams, Lasers, Synchronism, Targets, X Rays, Imaging Techniques, Implosions, Laser Plasmas, Ribbons, Streak Cameras, Transit Time

Scientific paper

A new x-ray technique for recording the relative arrival times of multiple laser beams at a common target with better than +/- 10 ps accuracy has been implemented at the Nova laser facility. 100 ps, 3(omega) Nova beam are focused to separate locations on a gold ribbon target viewed from the side. The measurement consists of using well characterized re-entrant x ray streak cameras for 1-dimensional streaked imaging of the greater than 3 keV x rays emanating from these isolated laser plasmas. After making the necessary correction for the differential laser, x ray and electron transit times involved, timing offsets as low as +/- 7 ps are resolved, and on subsequent shots, corrected for, verified and independently checked. This level of synchronization proved critical in meeting the power balance requirements for indirectly-driven pulse-shaped Nova implosions.

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