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Profile modification by the ponderomotive force in spherical targets

Description: Experiments have been performed by LLL which indicate a definite density profile steepening. One possible mechanism for this effect is the ponderomotive force. LASNEX has been modified to include the light momentum deposition in the form rho dv/dt = -nabla P - nabla(radical epsilon + radical 1/epsilon) I/2c. Results will be presented from numerical simulations on spherical glass targets at laser intensities from 10/sup 14/ to 10/sup 16/ watts/cm/sup 2/. Emphasis is placed on the nature of the d… more
Date: October 26, 1977
Creator: Larsen, J. T. & Harte, J.
Partner: UNT Libraries Government Documents Department
open access

Exploding pusher targets for the SHIVA laser system

Description: The first targets for the 20 TW SHIVA laser system were designed. They are simple glass micro-balloons, approximately 300 ..mu..m in diameter and 2 ..mu..m thick, filled with D-T gas. Using LASNEX, whose model physics was utilized successfully for ARGUS targets, we optimize for both gain and yield. The target behaves as an exploding pusher. Different simple analytic models for the physics of this mode are presented, and are tested by comparing their scaling predictions, at constant absorbed pow… more
Date: September 26, 1977
Creator: Rosen, M. D.; Larsen, J. T. & Nuckolls, J. H.
Partner: UNT Libraries Government Documents Department
open access

Hazards analysis of laser fusion targets containing tritium

Description: Hazards analysis indicates that intact microballoons filled with D--T present only a negligible hazard. The ingestion of the microballoon is considered. The hazard associated with broken glass microballoons appears to be greater from the glass standpoint than from the tritium hazard. (MOW)
Date: January 26, 1977
Creator: Powell, T. J.
Partner: UNT Libraries Government Documents Department
open access

Equation of state of reacting strongly coupled plasmas

Description: A brief review is given of the quantum statistical theory of strongly coupled many component reacting plasmas. It is shown that three distinct renormalizations of the many component activity series are required to obtain an expansion, which can properly handle strongly coupled reacting plasmas, for all states of ionization when Z > 1. Compensation between bound and scattering state contributions to the partition function is shown to be an important consideration and leads automatically to a con… more
Date: September 26, 1977
Creator: Rogers, F. J.
Partner: UNT Libraries Government Documents Department
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