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LLE Review, Quarterly Report: Volume 84, July-September 2000

Description: This volume of the LLE Review, covering July-September 2000, begins with an article by T. R. Boehly, V. N. Goncharov, O. Gotchev, J. P. Knauer, D. D. Meyerhofer, D. Oron, S. P. Regan, Y. Srebro, W. Seka, D. Shvarts, S. Skupsky, and V.A. Smalyuk, who describe measurements of the effect of beam smoothing and pulse shape on imprinting. (Imprinting is defined as the imposition of pressure perturbations on the target by spatial variations in the laser intensity.) A principal result is the observatio… more
Date: December 1, 2000
Creator: Marshall, Frederic J.
Partner: UNT Libraries Government Documents Department
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LLE Review, Quarterly Report: Volume 79, April-June 1999

Description: This volume of the Laboratory for Laser Energetics (LLE) Review, covering the period April-June 1999, features a theoretical analysis of direct-drive target performance on National Ignition Facility (NIF). In this article R. P. J. Town, J. A. Delettrez, R. Epstein, V. N. Goncharov, R. L. McCrory, P. W. McKenty, R. W. Short, and S. Skupsky detail ignition target designs developed at LLE specifically to achieve successful direct-drive ignition on the NIF facility. A baseline ''all-DT'' target des… more
Date: April 1, 1999
Creator: Morse, Samuel F. B.
Partner: UNT Libraries Government Documents Department
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LLE Review, Quarterly Report: Volume 83, April-June 2000

Description: This volume of the LLE Review, covering April-June 2000, features an article by F. J. Marshall, T. Ohki, D. McInnis, Z. Ninkov, and J. Carbone, who detail the conversion of the OMEGA time-integrated x-ray diagnostics to electronic readout using direct-detection x-ray cameras [charge-injection devices (CID's)]. Pinhole and x-ray microscope images are shown along with inferred calibration measurements of the CID cameras. Currently, the same cameras are being used to obtain x-ray spectra in a TIM-… more
Date: December 2000
Partner: UNT Libraries Government Documents Department
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LLE Review, Quarterly Report: Volume 80, July-September 1999

Description: This volume of the LLE Review, covering the period July-September 1999, features a theoretical analysis of a process that generates mass perturbations of an imploding target driven by modulated laser illumination. The process, referred to as laser imprint, impacts the integrity of the shell during direct-drive implosions, potentially quenching target performance. In this article V. N. Goncharov, J. A. Delettrez, S. Skupsky, and R. P. J. Town present a model of the generation of mass perturbatio… more
Date: January 7, 2000
Partner: UNT Libraries Government Documents Department
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LLE Review, Quarterly Report: Volume 73, October-December 1997

Description: This progress report contains discussion on the following topics: A high-bandwidth electrical-waveform generator based on aperture-coupled striplines for OMEGA pulse-shaping applications; sweep deflection circuit development using computer-aided circuit design for the OMEGA multichannel streak camera; D-{sup 3}He protons as a diagnostic for target {rho}R; growth rates of the ablative Rayleigh-Taylor instability in inertial confinement fusion; three-dimensional analysis of the power transfer bet… more
Date: April 1, 1998
Creator: Jacobs, Stephen D.
Partner: UNT Libraries Government Documents Department
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LLE Review, Quarterly Report: Volume 65, October-December 1995

Description: This volume of the LLE Review, covering the period October-December 1995, contains a description of the generation and characterization of continuous, deep-surface-relief phase plates that are more efficient and versatile than previous designs. The LLE program plan has scheduled a number of enhancements to OMEGA`s performance and uniformity, the first of which is the implementation of these new distributed phase plates. Other articles in this volume include the discussion of an x-ray diagnostic… more
Date: June 1, 1996
Creator: Boehly, T. R.
Partner: UNT Libraries Government Documents Department
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LLE Review, Quarterly Report: Volume 63, April-June 1995

Description: 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… more
Date: October 1995
Creator: Craxton, R. S.
Partner: UNT Libraries Government Documents Department
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LLE Review, Quarterly Report: Volume 77, October-December 1998

Description: This volume of the LLE Review, covering the period October--December 1998, includes two articles addressing issues applicable to direct-drive ICF on the National Ignition Facility (NIF): laser-plasma interactions and laser-irradiation uniformity. Additional highlights of the research presented in this issue are: (1) P.B. Radha and S. Skupsky present a novel charged-particle diagnostic that performs simultaneous {rho}R measurements of the fuel, shell, and ablator regions of a compressed ICF targ… more
Date: December 31, 1998
Creator: Regan, S. P.
Partner: UNT Libraries Government Documents Department
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LLE Review, Quarterly Report: Volume 64, July-September 1995

Description: This volume of the LLE Review, covering the period July--September 1995, includes a description of the first target experiments performed on the upgraded OMEGA laser system. These experiments, carried out to active and test several diagnostics systems, have demonstrated successful functioning of the overall experimental system and have produced high neutron yields and high core temperatures. Other articles in this volume describe the diagnosis of core conditions using krypton line spectroscopy,… more
Date: September 1, 1995
Creator: Craxton, R. S.
Partner: UNT Libraries Government Documents Department
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LLE Review, Quarterly Report: Volume 74, January-March 1998

Description: This volume of the LLE Review covers the period January--March 1998. The first of eight articles documents the in-house development, scale-up, and manufacture of 60 continuous distributed phase plates with high laser-damage resistance. D.J. Smith et al. describe how inert ion beams were used to etch a continuously varying pattern into the surface of fused silica to form these devices. Other highlights of research presented in this issue are: (1) a soft x-ray microscope with high spatial resolut… more
Date: July 1, 1998
Creator: Jacobs, S. D.
Partner: UNT Libraries Government Documents Department
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