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Laser Fusion Experiments At The Lawrence Livermore Laboratory
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Book Synopsis Laser Fusion Experiments at the Lawrence Livermore Laboratory by :
Download or read book Laser Fusion Experiments at the Lawrence Livermore Laboratory written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A short review is given of some of the important dates in the experimental fusion program at Livermore. A few of the parameters of the laser systems which are being used for these experiments are mentioned. Some information about specialized diagnostics which have been developed at the Livermore Laboratory for these experiments is described. The focusing arrangements for each of the systems are discussed. Experiments both on planar targets and on targets for laser fusion are described. (auth).
Book Synopsis Laser Fusion Experiments, Facilities and Diagnostics at Lawrence Livermore Laboratory by :
Download or read book Laser Fusion Experiments, Facilities and Diagnostics at Lawrence Livermore Laboratory written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The progress of the LLL Laser Fusion Program to achieve high gain thermonuclear micro-explosions is discussed. Many experiments have been successfully performed and diagnosed using the large complex, 10-beam, 30 TW Shiva laser system. A 400 kJ design of the 20-beam Nova laser has been completed. The construction of the first phase of this facility has begun. New diagnostic instruments are described which provide one with new and improved resolution, information on laser absorption and scattering, thermal energy flow, suprathermal electrons and their effects, and final fuel conditions. Measurements were made on the absorption and Brillouin scattering for target irradiations at both 1.064 .mu.m and 532 nm. These measurements confirm the expected increased absorption and reduced scattering at the shorter wavelength. Implosion experiments have been performed which have produced final fuel densities over the range of 10x to 100x liquid DT density.
Book Synopsis Laser Fusion Experiments at LLL. by :
Download or read book Laser Fusion Experiments at LLL. written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: These notes present the experimental basis and status for laser fusion as developed at LLL. Two other chapters, one authored by K.A. Brueckner and the other by C. Max, present the theoretical implosion physics and laser plasma interaction physics. The notes consist of six sections. The first is an introductory section which provides some of the history of inertial fusion and a simple explanation of the concepts involved. The second section presents an extensive discussion of diagnostic instrumentation used in the LLL Laser Fusion Program. The third section is a presentation of laser facilities and capabilities at LLL. The purpose here is to define capability, not to derive how it was obtained. The fourth and fifth sections present the experimental data on laser-plasma interaction and implosion physics. The last chapter is a short projection of the future.
Book Synopsis Laser Fusion Experiments at LLL by :
Download or read book Laser Fusion Experiments at LLL written by and published by . This book was released on 1980 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser Fusion Experiments at 2 TW. [Argus System ; Implosion of D-T Filled Glass Microspheres]. by :
Download or read book Laser Fusion Experiments at 2 TW. [Argus System ; Implosion of D-T Filled Glass Microspheres]. written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Lawrence Livermore Laboratory Solid State Laser System, Arqus, has successfully performed laser implosion experiments at power levels exceeding 2 TW. D-T filled glass microspheres have been imploded to yield thermonuclear reaction products in excess of 5 x 108 per event. Neutron and .cap alpha. time-of-flight measurements indicate that D-T ion temperatures of approximately 5-6 keV and a density confinement time product (n tau) of approximately 1 x 1012 were obtained in these experiments. Typically two 40J, 40 psec pulses of 1.06 .mu.m light were focused on targets using 20 cm aperture f/1 lenses, producing intensities at the target in excess of 1016 W/cm2. An extensive array of diagnostics routinely monitored the laser performance and the laser target interaction process. Measurements of absorption and asymmetry in both the scattered light distribution and the ion blow off is evidence for non-classical absorption mechanisms and density scale heights of the order of 2 .mu.m or less. The symmetry of the thermonuclear burn region is investigated by monitoring the .cap alpha.-particle flux in several directions, and an experiment to image the thermonuclear burn region is in process. These experiments significantly extend our data base and our understanding of laser induced thermonuclear implosions and the basic laser plasma interaction physics from the 0.4 to 0.7 TW level of previous experiments.
Book Synopsis Progress of Laser Fusion at Lawrence Livermore Laboratory by :
Download or read book Progress of Laser Fusion at Lawrence Livermore Laboratory written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Shiva and Nova programs are briefly reviewed. Some target diagnostics are described. Some laser-plasma interaction experiments are discussed. (MOW).
Book Synopsis Plasma Experiments with 1. 06. Mu. M Lasers at Lawrence Livermore Laboratory by :
Download or read book Plasma Experiments with 1. 06. Mu. M Lasers at Lawrence Livermore Laboratory written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent laser fusion experiments at Lawrence Livermore Laboratory have provided basic data concerning laser beam propagation and absorption in high temperature plasmas, electron energy transport processes that transfer the absorbed laser energy to the high density ablation region, the general fluid dynamic expansion and compression of the heated plasma, and the processes responsible for the production of 14 MeV neutrons during implosion experiments. This paper reports results related to the propagation, absorption and scattering of laser light by spherical and planar targets.
Book Synopsis Laser Fusion Experiments at 2 TW. [ARGUS Implosions of D--T Microspheres]. by :
Download or read book Laser Fusion Experiments at 2 TW. [ARGUS Implosions of D--T Microspheres]. written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Lawrence Livermore Laboratory solid state laser system, ARGUS, has successfully performed laser implosion experiments at power levels exceeding 2 TW. D-T filled glass microspheres have been imploded to yield thermonuclear reaction products in excess of 108 per event. Neutron and .cap alpha. time of flight measurements indicate that D-T ion temperatures of (3 to 4.5 keV) and a density confinement time product (n tau) of approximately (1 to 3) x 1012 were obtained in these experiments. Typically two 30J, 30 psec pulses of 1.06 .mu.m light were focused on targets using 20 cm aperture f/l lenses, producing intensities at the target in excess of 1016 W/cm2. An extensive array of diagnostics routinely monitored the laser performance and the laser target interaction process. Measurements of absorption and asymmetry in both the scattered light distribution and the ion blow off is evidence for non-classical resonant processes absorption mechanisms and density scale heights of the order of 2.mu.m or less. The symmetry of the thermonuclear burn region is investigated by monitoring the .cap alpha. particle flux in several directions, and an experiment to image the thermonuclear burn region is in process. These experiments significantly extend our data base and our understanding of laser induced thermonuclear implosions and the basic laser plasma interaction physics from the 0.4 to 0.7 TW level of previous experiments.
Book Synopsis Plasma Experiments with 1. 06-. Mu. M Lasers at the Lawrence Livermore Laboratory by :
Download or read book Plasma Experiments with 1. 06-. Mu. M Lasers at the Lawrence Livermore Laboratory written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent laser fusion experiments at the Lawrence Livermore Laboratory have provided basic data concerning: laser beam propagation and absorption in high temperature plasmas, electron energy transport processes that transfer the absorbed laser energy to the high-density ablation region, the general fluid dynamic expansion and compression of the heated plasma, and the processes responsible for the production of 14-MeV neutrons during implosion experiments. Irradiation experiments were performed with Nd:YAG glass laser systems: the two-beam Janus (less than or equal to40 J/100 ps, approx.0.4 TW) and Argus (less than or equal to140 J, 35 ps, approx. 4 TW), and the single beam Cyclops (less than or equal to70 J/100 ps, approx.0.7 TW). Two classes of targets have been used: glass microshells (approx. 40 to 120 .mu.m in diameter with approx.0.75-.mu.m-thick walls) filled with an equimolar deuterium-tritium mixture, and disks (approx. 160 to 600 .mu.m in diameter and approx. 10 .mu.m thick) of several compositions. The targets were supported in vacuum (pressure less than or equal to10−5 Torr) by thin glass stalks. This paper reports on results related to the propagation, absorption, and scattering of laser light by both spherical and planar targets.
Book Synopsis Physics of Laser Fusion. Volume II. Diagnostics of Experiments on Laser Fusion Targets at LLNL. by :
Download or read book Physics of Laser Fusion. Volume II. Diagnostics of Experiments on Laser Fusion Targets at LLNL. written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: These notes present the experimental basis and status for laser fusion as developed at LLNL. There are two other volumes in this series: Vol. I, by C.E. Max, presents the theoretical laser-plasma interaction physics; Vol. III, by J.F. Holzrichter et al., presents the theory and design of high-power pulsed lasers. A fourth volume will present the theoretical implosion physics. The notes consist of six sections. The first, an introductory section, provides some of the history of inertial fusion and a simple explanation of the concepts involved. The second section presents an extensive discussion of diagnostic instrumentation used in the LLNL Laser Fusion Program. The third section is a presentation of laser facilities and capabilities at LLNL. The purpose here is to define capability, not to derive how it was obtained. The fourth and fifth sections present the experimental data on laser-plasma interaction and implosion physics. The last chapter is a short projection of the future.
Book Synopsis Valkyrie, a CO2 Laser System for Laser Fusion Experiments by :
Download or read book Valkyrie, a CO2 Laser System for Laser Fusion Experiments written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recent Laser-plasma Interaction Experiments at the Lawrence Livermore National Laboratory by :
Download or read book Recent Laser-plasma Interaction Experiments at the Lawrence Livermore National Laboratory written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent Livermore experiments are aimed at investigating laser-plasma interaction issues which are relevant to ablatively driven fusion processes. We report the data obtained from using longer pulses and shorter laser wavelengths.
Book Synopsis Lawrence Livermore National Laboratory Laser-fusion Program by :
Download or read book Lawrence Livermore National Laboratory Laser-fusion Program written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The goals of the Laser-Fusion Program at Lawrence Livermore National Laboratory are to produce well-diagnosed, high-gain, laser-driven fusion explosions in the laboratory and to exploit this capability for both military applications and for civilian energy production. In the past year we have made significant progress both theoretically and experimentally in our understanding of the laser interaction with both directly coupled and radiation-driven implosion targets and their implosion dynamics. We have made significant developments in fabricating the target structures. Data from the target experiments are producing important near-term physics results. We have also continued to develop attractive reactor concepts which illustrate ICF's potential as an energy producer.
Book Synopsis Status of Laser Fusion. [Review of Research at KMSF, LLL, Los Alamos, and Univ. of Rochester Laboratories]. by :
Download or read book Status of Laser Fusion. [Review of Research at KMSF, LLL, Los Alamos, and Univ. of Rochester Laboratories]. written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: During 1974-1975, first generation laser implosion experiments have been performed at the KMSF, Livermore, Los Alamos, and University of Rochester Laboratories. Several significant results were achieved in these experiments. The fuel underwent large entropy changes during implosion and did not reach high densities. Consequently, the sensitivity to fluid and plasma instabilities was greatly reduced. A summary of these implosion experiments is presented.
Book Synopsis Inertial Fusion Research at Lawrence Livermore National Laboratory by :
Download or read book Inertial Fusion Research at Lawrence Livermore National Laboratory written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of the Lawrence Livermore National Laboratory (LLNL) Laser Fusion Program are to understand and develop the science and technology required to utilize inertial confinement fusion (ICF) for both military and commercial applications. The results of recent experiments are described. We point out the progress in our laser studies, where we continue to develop and test the concepts, components, and materials for present and future laser systems. While there are many potential commercial applications of ICF, we limit our discussions to electric power production.
Download or read book Laser Fusion written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: At Livermore the 10 kJ, 20 to 30 TW Shiva facility is now operational and producing regular new fusion results. Design work has begun on a 200 to 300 TW laser designed to carry the program through the first breakeven demonstration experiments in the mid-1980's. Confidence in reaching this goal is based on the significant progress we have made in state-of-the-art, high-power Nd:glass laser technology, in experimental laser fusion and laser plasma interaction physics, and in theoretical and analytical computer codes which reliably model and predict experimental results. For all of these experiments, a variety of fusion targets are being fabricated in the laboratory, and the control and handling of tritium is now a regular and routine part of ongoing inertial fusion experiments. Target design with gains of about 1000 have been studied and the means to mass produce such pellets at low cost are also being developed.
Book Synopsis Civilian Applications of Laser Fusion by : Lawrence Livermore Laboratory
Download or read book Civilian Applications of Laser Fusion written by Lawrence Livermore Laboratory and published by . This book was released on 1978 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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