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The Use Of Electrostatic Probes To Characterize The Discharge Plasma Structure And Identify Discharge Cathode Erosion Mechanisms In Ring Cusp Ion Thrusters Book in PDF, ePub and Kindle version is available to download in english. Read online anytime anywhere directly from your device. Click on the download button below to get a free pdf file of The Use Of Electrostatic Probes To Characterize The Discharge Plasma Structure And Identify Discharge Cathode Erosion Mechanisms In Ring Cusp Ion Thrusters book. This book definitely worth reading, it is an incredibly well-written.
Author : Daniel A. Herman
Publisher : Unknown
Page : 910 pages
File Size : 48,7 Mb
Release : 2005
Category : Electronic
ISBN : UOM:39015062469823
Author : D.L. Liu,X.B. Zhu,K.L. Xu,D.M. Fang
Publisher : Trans Tech Publications Ltd
Page : 4700 pages
File Size : 45,9 Mb
Release : 2014-02-06
Category : Technology & Engineering
ISBN : 9783038263937
Collection of selected, peer reviewed papers from the 2014 International Conference on Advances in Materials Science and Information Technologies in Industry (AMSITI 2014), January 11-12, 2014, Xian, China. Volume is indexed by Thomson Reuters CPCI-S (WoS). The 1030 papers are grouped as follows: Chapter 1: Materials Science and Processing Technologies; Chapter 2: Information Technologies and Information Processing Algorithms; Chapter 3: Applied Sciences and Engineering Researches
Author : Anonim
Publisher : Unknown
Page : 942 pages
File Size : 50,9 Mb
Release : 2006
Category : Dissertations, Academic
ISBN : STANFORD:36105121679422
Author : Joshua Lucas Rovey
Publisher : Unknown
Page : 724 pages
File Size : 50,8 Mb
Release : 2006
Category : Electronic
ISBN : UOM:39015063181252
Author : Anonim
Publisher : Unknown
Page : 822 pages
File Size : 51,5 Mb
Release : 2008
Category : Rocketry
ISBN : UCSD:31822036948941
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
Page : 34 pages
File Size : 52,8 Mb
Release : 2018-06-24
Category : Electronic
ISBN : 1721815031
Floating emissive probe plasma potential data are presented over a two-dimensional array of locations in the near Discharge Cathode Assembly (DCA) region of a 30-cm diameter ring-cusp ion thruster. Discharge plasma data are presented with beam extraction at throttling conditions comparable to the NASA TH Levels 8, 12, and 15. The operating conditions of the Extended Life Test (ELT) of the Deep Space One (DS1) flight spare ion engine, where anomalous discharge keeper erosion occurred, were TH 8 and TH 12 consequently they are of specific interest in investigating discharge keeper erosion phenomena. The data do not validate the presence of a potential hill plasma structure downstream of the DCA, which has been proposed as a possible erosion mechanism. The data are comparable in magnitude to data taken by other researchers in ring-cusp electron-bombardment ion thrusters. The plasma potential structures are insensitive to thruster throttling level with a minimum as low as 14 V measured at the DCA exit plane and increasing gradually in the axial direction. A sharp increase in plasma potential to the bulk discharge value of 26 to 28 volts, roughly 10 mm radially from DCA centerline, was observed. Plasma potential measurements indicate a low-potential plume structure that is roughly 20 mm in diameter emanating from the discharge cathode that may be attributed to a free-standing plasma double layer. Herman, Daniel A. and Gallimore, Alec D. Glenn Research Center NASA/CR-2006-213296, AIAA Paper 2004-3958, E-14743
Author : Dan M. Goebel,Ira Katz
Publisher : John Wiley & Sons
Page : 528 pages
File Size : 40,8 Mb
Release : 2008-12-22
Category : Technology & Engineering
ISBN : 9780470436264
Throughout most of the twentieth century, electric propulsion was considered the technology of the future. Now, the future has arrived. This important new book explains the fundamentals of electric propulsion for spacecraft and describes in detail the physics and characteristics of the two major electric thrusters in use today, ion and Hall thrusters. The authors provide an introduction to plasma physics in order to allow readers to understand the models and derivations used in determining electric thruster performance. They then go on to present detailed explanations of: Thruster principles Ion thruster plasma generators and accelerator grids Hollow cathodes Hall thrusters Ion and Hall thruster plumes Flight ion and Hall thrusters Based largely on research and development performed at the Jet Propulsion Laboratory (JPL) and complemented with scores of tables, figures, homework problems, and references, Fundamentals of Electric Propulsion: Ion and Hall Thrusters is an indispensable textbook for advanced undergraduate and graduate students who are preparing to enter the aerospace industry. It also serves as an equally valuable resource for professional engineers already at work in the field.
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
Page : 36 pages
File Size : 54,5 Mb
Release : 2018-06-24
Category : Electronic
ISBN : 1721815503
Single Langmuir probe measurements are presented over a two-dimensional array of locations in the near Discharge Cathode Assembly (DCA) region of a 30-cm diameter ring cusp ion thruster over a range of thruster operating conditions encompassing the high-power half of the NASA throttling table. The Langmuir probe data were analyzed with two separate methods. All data were analyzed initially assuming an electron population consisting of Maxwellian electrons only. The on-axis data were then analyzed assuming both Maxwellian and primary electrons. Discharge plasma data taken with beam extraction exhibit a broadening of the higher electron temperature plume boundary compared to similar discharge conditions without beam extraction. The opposite effect is evident with the electron/ion number density as the data without began, extraction appears to be more collimated than the corresponding data with beam extraction. Primary electron energy and number densities are presented for one operating condition giving an order of magnitude of their value and the error associated with this calculation. Herman, Daniel A. and Gallimore, Alec D. Glenn Research Center NASA/CR-2006-213299, AIAA Paper 2004-3794, E-14746
Author : Mitchell Louis Ronald Walker
Publisher : Unknown
Page : 560 pages
File Size : 55,8 Mb
Release : 2005
Category : Electronic
ISBN : UOM:39015060558452
Author : Orlando Auciello,Daniel L. Flamm
Publisher : Academic Press
Page : 470 pages
File Size : 49,7 Mb
Release : 2013-10-22
Category : Science
ISBN : 9781483216249
Plasma Diagnostics, Volume 1: Discharge Parameters and Chemistry covers seven chapters on the important diagnostic techniques for plasmas and details their use in particular applications. The book discusses optical diagnostic techniques for low pressure plasmas and plasma processing; plasma diagnostics for electrical discharge light sources; as well as Langmuir probes. The text also describes the mass spectroscopy of plasmas, microwave diagnostics, paramagnetic resonance diagnostics, and diagnostics in thermal plasma processing. Electrical engineers, nuclear engineers, microwave engineers, chemists, and technical personnel in universities, industry, and national laboratories will find the book invaluable.
Author : Francis F. Chen
Publisher : Springer Science & Business Media
Page : 427 pages
File Size : 51,5 Mb
Release : 2013-03-09
Category : Science
ISBN : 9781475755954
TO THE SECOND EDITION In the nine years since this book was first written, rapid progress has been made scientifically in nuclear fusion, space physics, and nonlinear plasma theory. At the same time, the energy shortage on the one hand and the exploration of Jupiter and Saturn on the other have increased the national awareness of the important applications of plasma physics to energy production and to the understanding of our space environment. In magnetic confinement fusion, this period has seen the attainment 13 of a Lawson number nTE of 2 x 10 cm -3 sec in the Alcator tokamaks at MIT; neutral-beam heating of the PL T tokamak at Princeton to KTi = 6. 5 keV; increase of average ß to 3%-5% in tokamaks at Oak Ridge and General Atomic; and the stabilization of mirror-confined plasmas at Livermore, together with injection of ion current to near field-reversal conditions in the 2XIIß device. Invention of the tandem mirror has given magnetic confinement a new and exciting dimension. New ideas have emerged, such as the compact torus, surface-field devices, and the EßT mirror-torus hybrid, and some old ideas, such as the stellarator and the reversed-field pinch, have been revived. Radiofrequency heat ing has become a new star with its promise of dc current drive. Perhaps most importantly, great progress has been made in the understanding of the MHD behavior of toroidal plasmas: tearing modes, magnetic Vll Vlll islands, and disruptions.
Author : Carlos M. Ferreira,Michel Moisan
Publisher : Springer Science & Business Media
Page : 556 pages
File Size : 40,5 Mb
Release : 2013-11-21
Category : Science
ISBN : 9781489911308
Proceedings of a NATO ARW held in Vimeiro, Portugal, May 11-15, 1992
Author : Thomas J. Dolan
Publisher : Springer Science & Business Media
Page : 816 pages
File Size : 47,8 Mb
Release : 2014-02-10
Category : Technology & Engineering
ISBN : 9781447155560
Magnetic Fusion Technology describes the technologies that are required for successful development of nuclear fusion power plants using strong magnetic fields. These technologies include: • magnet systems, • plasma heating systems, • control systems, • energy conversion systems, • advanced materials development, • vacuum systems, • cryogenic systems, • plasma diagnostics, • safety systems, and • power plant design studies. Magnetic Fusion Technology will be useful to students and to specialists working in energy research.
Author : Peter O. K. Krehl
Publisher : Springer Science & Business Media
Page : 1298 pages
File Size : 50,9 Mb
Release : 2008-09-24
Category : Science
ISBN : 9783540304210
This unique and encyclopedic reference work describes the evolution of the physics of modern shock wave and detonation from the earlier and classical percussion. The history of this complex process is first reviewed in a general survey. Subsequently, the subject is treated in more detail and the book is richly illustrated in the form of a picture gallery. This book is ideal for everyone professionally interested in shock wave phenomena.
Author : Gerhard Franz
Publisher : Springer Science & Business Media
Page : 743 pages
File Size : 55,5 Mb
Release : 2009-04-09
Category : Technology & Engineering
ISBN : 9783540858492
Over the last forty years, plasma supported processes have attracted ever - creasing interest, and now, all modern semiconductor devices undergo at least one plasma-involved processing step, starting from surface cleaning via coating to etching. In total, the range of the treated substrates covers some orders of magnitude: Trenches and linewidths of commercially available devices have - ready passed the boundary of 100 nm, decorative surface treatment will happen 2 in the mm range, and the upper limit is reached with surface protecting layers of windows which are coated with ?/4 layers against IR radiation. The rapid development of the semiconductor industry is inconceivable wi- outthegiantprogressintheplasmatechnology.Moore’slawisnotcarvedinto 1 stone, and not only the ITRS map is subject to change every ?ve years but also new branches develop and others mingle together. Moreover, the quality of conventional materials can be improved by plasma treatment:Cottonbecomesmorecrease-resistant,leathermoredurable,andthe shrinking of wool ?bers during the washing process can be signi?cantly reduced. To cut a long story short: More than 150 years after the discovery of the sputtering e?ect by Grove, plasma-based processes are about to spread out into new ?elds of research and application [1]—no wonder that the market for etching machines kept growing by an annual rate of 17 % up to the burst of the internet bubble, and it took only some years of recovery to continue the voyage [2].
