LLE Review, Quarterly Report: Volume 55, April-June 1993 (open access)

LLE Review, Quarterly Report: Volume 55, April-June 1993

This volume of the LLE Review, covering the period April--June 1993, contains articles on spectral features from argon-filled target implosions on OMEGA, and on the theory of an implicit difference scheme for the Fokker-Planck equation. The advanced technology section includes reports on a novel polymer liquid-crystal wave plate and a new scheme for phase conversion of the OMEGA Upgrade beams that results in greater, smoother energy deposition on fusion targets. Finally, reports on the as-designed configuration of the OMEGA newly configured glass development laser system are summarized.
Date: October 1, 1993
Creator: Hutchison, R. J.
System: The UNT Digital Library
LLE Review, Quarterly Report: Volume 71, April-June 1997 (open access)

LLE Review, Quarterly Report: Volume 71, April-June 1997

This volume of the LLE Review, covering the period April-June 1997, includes an article discussing the results from recent experiments performed on OMEGA. These experiments used a new beam-smoothing device-distributed polarization rotators-in concert with existing techniques to improve the on-target uniformity of each beam. The result of this improved radiation uniformity was a substantive reduction in imprinting-the nonuniformity caused by the laser. A novel way to study the time dependence of this imprinting is also presented in this article.
Date: October 1, 1997
Creator: Harding, David
System: The UNT Digital Library
LLE Review, Quarterly Report: Volume 63, April-June 1995 (open access)

LLE Review, Quarterly Report: Volume 63, April-June 1995

This volume of the LLE Review, covering the period of April--June 1995, includes a description of the initial performance results of the upgraded OMEGA laser system. A series of acceptance tests were completed, demonstrating that all 60 beams can irradiate targets with more energy and better beam balance than was required by the Department of Energy`s acceptance criteria. Other articles in this volume include a description of a novel energy measurement system used to diagnose all 60 OMEGA beams; a theoretical calculation of the cutoff wave number of the ablative Rayleigh-Taylor instability, applicable to both direct and indirect drive; a description of a new algorithm used for designing distributed phase plates that will produce super-Gaussian focal-plane irradiance profiles: a study of the photoresponse of high-{Tc} YBCO thin films; and a description of magnetorheological finishing, a new process for optics polishing.
Date: October 1995
Creator: Craxton, R. S.
System: The UNT Digital Library