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Shock-Free Acceleration of Laser Driven Targets

Author: Mark H Emery; John H Gardner; NAVAL RESEARCH LAB WASHINGTON DC.
Publisher: Ft. Belvoir Defense Technical Information Center 10 DEC 1992.
Edition/Format:   eBook : English
Database:WorldCat
Summary:
The ability of recently developed laser smoothing techniques to produce uniform ablation pressures is strongly contingent on the degree of thermal smoothing. Thermal smoothing is not effective at reducing residual laser nonuniformities during the start up phase of a shaped, reactor-like laser pulse. The impact of the first shock can be diminished by adiabatically compressing the target with a temporally long, slowly  Read more...
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Material Type: Internet resource
Document Type: Internet Resource
All Authors / Contributors: Mark H Emery; John H Gardner; NAVAL RESEARCH LAB WASHINGTON DC.
OCLC Number: 227789225
Description: 15 pages

Abstract:

The ability of recently developed laser smoothing techniques to produce uniform ablation pressures is strongly contingent on the degree of thermal smoothing. Thermal smoothing is not effective at reducing residual laser nonuniformities during the start up phase of a shaped, reactor-like laser pulse. The impact of the first shock can be diminished by adiabatically compressing the target with a temporally long, slowly rising laser pulse. This Memorandum Report discusses an elastic-plastic laser-matter-interaction model and shows that a shock-free, induced spatial incoherence-smoothed laser pulse can accelerate a target to nearly the conditions required for uniform implosion.

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Primary Entity

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