Accession Number:

ADA090524

Title:

Preheat Studies on Laser Ablatively-Accelerated Foils.

Descriptive Note:

Memorandum rept.,

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s):

• McLean,E. A.
• Gold,S. H.
• Stamper,J. A.
• Whitlock,R. R.
• Griem,H. R.

Report Date:

1980-10-13

Pagination or Media Count:

17.0

Abstract:

The achievement of laser fusion requires the inward acceleration of pellet shells to very high velocity without excessive preheat of the pellet fuel. In a study of ablatively accelerated thin planar Al foils, we have determined the complete time history of the rear surface temperatures, and evaluated the energy transport mechanisms that contribute to the heating. Extrapolation to larger, reactor-sized pellets indicates that preheat is minimal at low laser irradiances. Author

Descriptors:

• *LASER BEAMS
• *CONTROLLED NUCLEAR FUSION
• *IMPLOSIONS
• COMPRESSION
• ABLATION
• ENERGY TRANSFER
• ALUMINUM
• HEATING
• PELLETS

Subject Categories:

• Lasers and Masers
• Fusion Devices (Thermonuclear)

Distribution Statement:

APPROVED FOR PUBLIC RELEASE