Subpicosecond X-Ray Streak Camera Development For Laser-Fusion Diagnostics

Albert J. Lieber; H. Dean Sutphin; Clinton B. Webb; Arthur H. Williams

doi:10.1117/12.955216

14 September 1977 Subpicosecond X-Ray Streak Camera Development For Laser-Fusion Diagnostics

Albert J. Lieber, H. Dean Sutphin, Clinton B. Webb, Arthur H. Williams

Proceedings Volume 0097, 12th Intl Congress on High Speed Photography; (1977) https://doi.org/10.1117/12.955216
Event: 12th International Congress on High Speed Photography, 1976, Toronto, Canada

Abstract

In laser-fusion interactions the effectiveness of coupling laser energy into target compression can be followed by obtaining spatial and temporal information on x-radiation emitted by the target. Microballoon targets now used require temporal resolution of better than a few picoseconds to track accurately target collapse and disassembly. Instabilities of two picoseconds or less are predicted for the process. Most streak cameras are based upon a sector-focused streak tube, which in the design limit is capable of only about 10 ps x-ray resolution. Therefore, a new tube, based upon the proximity-focused or wafer intensifier was developed as a laser-fusion diagnostic capable in the design limit of delivering truly sub-picosecond x-ray resolution. A new power supply was also developed to drive the streak tube. Together, a camera has resulted with true picosecond capability, small size, high sensitivity, broad dynamic range, high spatial resolution, and very low jitter. The system has proved 98% reliable in over 300 laser shots providing data on the collapse of microballoons when irradiated by a dual beam Nd:YAG laser. Theoretical predictions of 2.5 to 3 ps resolution are consistent with experimental data. A visible variant of the design now under construction is expected to give sub-picosecond resolution with advantages similar to the x-ray system.

Citation Download Citation

Albert J. Lieber, H. Dean Sutphin, Clinton B. Webb, and Arthur H. Williams "Subpicosecond X-Ray Streak Camera Development For Laser-Fusion Diagnostics", Proc. SPIE 0097, 12th Intl Congress on High Speed Photography, (14 September 1977); https://doi.org/10.1117/12.955216

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