Download or read book Fast Wave Ion Cyclotron Heating in the Princeton Large Torus written by J. Hosea and published by . This book was released on 1981 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fast wave Ion cyclotron Heating in the Princeton Large Torus written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent experimental results for ICRF heating in PLT are presented. For the two-ion regime in D-H or D-3He plasmas minority H and 3He ions are found to absorb the rf power and transfer it to the deuterons and electrons in accordance with Fokker-Planck theory. The deuteron heating rate is approx. 3 eV x 1013 cm−3/kW for H and approx. 6 eV x 1013 cm−3/kW for 3He minorities. Neutron fluxes of approx. 3 x 1011 sec−1 corresponding to a T/sub d/ approx. 2 keV (.delta. T/sub d/ approx. 1.2 keV) have been produced with P/sub rf/ approx. = 620 kW at anti n/sub e/ approx. = 2.9 x 1013 cm−3. Neutron energy spectra and mass sensitive charge exchange spectra indicate Maxwellian deuteron distributions. In addition, D-3He fusion reaction rates greater than or equal to 1012 sec−1 have been produced by the energetic 3He ions. For the second harmonic regime, initial heating results for an H plasma at P/sub rf/ approx. = 140 kW are consistent with the Fokker-Planck theory and the bulk heating rate is comparable to that of D heating in the D-H minority regime.
Download or read book Fast Wave Heating in the Princeton Large Torus written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Fast wave heating in the ion cyclotron range of frequencies (ICRF) is being studied on the Princeton Large Torus (PLT) to evaluate its potential for heating large reactor-scale toroidal plasmas. Of primary interest are the two-ion and pure second harmonic heating regimes which, with proper control of the ion energy distribution and the rf power deposition profile, permit substantial energy glow into the bulk plasma ions. Initial heating experiments have been conducted with a single 1/2 turn antenna up to wave powers of P/sub rf/ approx. = 350 kW for durations of greater than or equal to 100 ms in the two-ion regime under conditions for which direct fundamental cyclotron damping on the minority ion species dominates the wave absorption. Ion-ion coupling serves to heat the majority ions and for energetic minority ion energy distributions, energy flow to the electrons results from electron drag. Substantial ion heating is found for D-p mixtures; .delta. T/sub d/(0) approx. = 600 eV for 350 kW with anti n/sub e/ approx. = 2 x 1013 cm−3. The deuteron heating efficiency is improved by about a factor of approx. 2 in D−3He mixtures; .delta. T/sub d/(0) approx. = 500 eV for 150 kW with anti n/sub e/ approx. = 2.1 x 1013 cm−3.
Download or read book Fast Wave Heating of Two ion Plasmas in the Princeton Large Torus Through Minority Cyclotron Resonance Damping written by Princeton University. Plasma Physics Laboratory and published by . This book was released on 1979 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fast Wave Heating of Two ion Plasmas in the Princeton Large Torus Through Minority Cyclotron Resonance Damping written by Princeton University. Plasma Physics Laboratory and published by . This book was released on 1979 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fast Ion Orbit Effects During Ion Cyclotron Range of Frequency Experiments on the Princeton Large Torus written by R. Kaita and published by . This book was released on 1983 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Understanding Ion Cyclotron Harmonic Fast Wave Heating Losses in the Scrape Off Layer of Tokamak Plasmas written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Fast waves at harmonics of the ion cyclotron frequency, which have been used successfully on National Spherical Torus Experiment (NSTX), will also play an important role in ITER and are a promising candidate for the Fusion Nuclear Science Facility (FNSF) designs based on spherical torus (ST). Experimental studies of high harmonic fast waves (HHFW) heating on the NSTX have demonstrated that substantial HHFW power loss occurs along the open field lines in the scrape-off layer (SOL), but the mechanism behind the loss is not yet understood. The full wave RF code AORSA, in which the edge plasma beyond the last closed flux surface (LCFS) is included in the solution domain, is applied to specific NSTX discharges in order to predict the effects and possible causes of this power loss. In the studies discussed here, a collisional damping parameter has been implemented in AORSA as a proxy to represent the real, and most likely nonlinear, damping processes. A prediction for the NSTX Upgrade (NSTX-U) experiment, that will begin operation next year, is also presented, indicating a favorable condition for the experiment due to a wider evanescent region in edge density.*Research supported by the U.S. DOE under Contract No. DE-AC02-09CH11466 with Princeton University.
Download or read book Fusion Energy Update written by and published by . This book was released on 1980 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1990 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1980-10 with total page 1180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Controlled Nuclear Fusion written by J. Raeder and published by . This book was released on 1986 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Treats not only the physical, but the technological, ecological, and economic basis for using controlled nuclear fusion to produce energy. Topics on the development of fusion are examined without reference to the currently favored magnetic confinement and tokamak lines of fusion research except where problems are specific to them, in the case of a tokamak with deuterium-tritium plasma, for example. Discusses other less developed but potentially promising concepts for the future production of powerful neutron sources.
Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1980 with total page 1268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1968 with total page 1256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Waves in Plasmas written by Thomas H. Stix and published by Springer Science & Business Media. This book was released on 1992-12-01 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Blurb & Contents" "The reader is treated to constantly refreshing and engaging commentary and opinion that always informs....As she depicts them, the problems of the universe are always fascinating and, most of all, they are alive and compelling." David DeVorkin, Sky & Telescope Virginia Trimble offers readers a fascinating and accessible tour of the stars. An astronomer with shared appointments in California and Maryland, the author ranges over a large portion of the universe as she discusses the search for life on other planets, how galaxies form, why stars explode and die, and the nature of the elusive dark matter in the universe. She also explains the astronomical significance of Cheeps' pyramid and leads the reader through scientific speculation about what and when the Star of Bethlehem might have been. Throughout, Trimble points to the exciting unanswered questions that still perplex the field and considers the formidable tasks to be faced by the next generation of young astronomers.
Download or read book Plasma Physics and Controlled Nuclear Fusion Research written by and published by . This book was released on 1985 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plasma Physics Index written by and published by . This book was released on 1982 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1976 with total page 988 pages. Available in PDF, EPUB and Kindle. Book excerpt:
