Plasma Potential And Langmuir Probe Measurements In The Near Field Plume Of The Nasa 300m Hall Thruster

Download Plasma Potential And Langmuir Probe Measurements In The Near Field Plume Of The Nasa 300m Hall Thruster full books in PDF, epub, and Kindle. Read online Plasma Potential And Langmuir Probe Measurements In The Near Field Plume Of The Nasa 300m Hall Thruster ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!

Fundamentals of Electric Propulsion

Author : Dan M. Goebel
Publisher : John Wiley & Sons
ISBN 13 : 0470436263
Total Pages : 528 pages
Book Rating : 4.4/5 (74 download)

DOWNLOAD NOW!

Book Synopsis Fundamentals of Electric Propulsion by : Dan M. Goebel

Download or read book Fundamentals of Electric Propulsion written by Dan M. Goebel and published by John Wiley & Sons. This book was released on 2008-12-22 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Plasma Characteristics Measured in the Plume of a Next Multi-Thruster Array

Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781720663096
Total Pages : 28 pages
Book Rating : 4.6/5 (63 download)

DOWNLOAD NOW!

Book Synopsis Plasma Characteristics Measured in the Plume of a Next Multi-Thruster Array by : National Aeronautics and Space Administration (NASA)

Download or read book Plasma Characteristics Measured in the Plume of a Next Multi-Thruster Array written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-03 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plasma properties in the plume produced by a 3+1 NEXT thruster array operating at full power were mapped using a series of planar Langmuir probes. The Langmuir probes were swept across the diameters of each thruster as well as the centerline of the array at multiple downstream axial locations to produce a plasma map of the plume produced by the array. Such maps yielded the spatial distribution of the plasma density, the electron temperature and the plasma potential in the near field of the array. This spatial information provides insight into local plasma particle flow. Flow direction is particularly important from both an array lifetime and spacecraft-plume plasma interaction standpoint. The variation in the plume plasma parameters tended to vary in a manner consistent with both plume shape and overlap of adjacent plumes.Foster, John E. and Patterson, Michael and Pencil, Eric and McEwen, Heather and Diaz, EstherGlenn Research CenterPLUMES; PLASMAS (PHYSICS); THRUSTORS; PLASMA POTENTIALS; ELECTROSTATIC PROBES; SPATIAL DISTRIBUTION; ELECTRON ENERGY; PLASMA DENSITY; NEAR FIELDS

Performance Evaluation of the SPT-140

Author :
Publisher :
ISBN 13 :
Total Pages : 14 pages
Book Rating : 4.:/5 (317 download)

DOWNLOAD NOW!

Book Synopsis Performance Evaluation of the SPT-140 by :

Download or read book Performance Evaluation of the SPT-140 written by and published by . This book was released on 1997 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:

First CHAMP Mission Results for Gravity, Magnetic and Atmospheric Studies

Author : Christoph Reigber
Publisher : Springer Science & Business Media
ISBN 13 : 3540383662
Total Pages : 572 pages
Book Rating : 4.5/5 (43 download)

DOWNLOAD NOW!

Book Synopsis First CHAMP Mission Results for Gravity, Magnetic and Atmospheric Studies by : Christoph Reigber

Download or read book First CHAMP Mission Results for Gravity, Magnetic and Atmospheric Studies written by Christoph Reigber and published by Springer Science & Business Media. This book was released on 2012-09-07 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1995, the German Space Agency DARA selected the CHAllenging Minisatellite Payload (CHAMP) mission for development under a special support programme for the space industry in the new states of the unified Germany, with the Principal Investigator and his home institution GFZ Potsdam being ultimately responsible for the success of all mission phases. After three years of spacecraft manufactur ing and testing, the satellite was injected successfully into its final, near circular, almost polar and low altitude (450 km) orbit from the cosmodrome Plesetsk in Russia on July 15, 2000. After a nine month commissioning period during which all spacecraft systems and instruments were checked, calibrated and validated, the satellite has been delivering an almost uninterrupted flow of science data since May 2001. Since this date, all science data have been made available to the more than 150 selected co-investigator teams around the globe through an international Announcement of Opportunity. The scientific goals of the CHAMP mission are to gain a better understanding of dynamic processes taking place in the Earth's interior and in the space near Earth. These goals can be achieved by improved observation of the Earth's gravity and magnetic fields and their time variability with high-performance on-board instru mentation and by exploring the structure of the Earth's atmosphere and ionosphere through radio occultation measurements.

Langmuir Probe in Theory and Practice

Author : Evgeny V. Shun'ko
Publisher : Universal-Publishers
ISBN 13 : 1599429357
Total Pages : 251 pages
Book Rating : 4.5/5 (994 download)

DOWNLOAD NOW!

Book Synopsis Langmuir Probe in Theory and Practice by : Evgeny V. Shun'ko

Download or read book Langmuir Probe in Theory and Practice written by Evgeny V. Shun'ko and published by Universal-Publishers. This book was released on 2009 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: From flat-panel televisions to thermonuclear fusion for energy production, plasmas currently have numerous and wide applications in sciences and industry. A diversity of plasma diagnostics is available to physicists and engineers to measure and control plasma parameters. Among them, the Langmuir probe is the most inexpensive and most popular instrument and method. The Langmuir probe is a small electrode which is submerged in plasma in order to measure the probe current-voltage characteristic. The same characteristic is processed further to derive the electron and ion concentration, the electron distribution function, and the plasma potential at the probe location. Langmuir probe diagnostics afford rapid measurements of the electron distribution function and plasma potential at a good time resolution, 10-8 seconds in a wide range of plasma densities 10+3 - 10+14 cm-3, and the electron energy from the room temperature to hundreds of electron-volts - qualities which are essential for researchers. In view of these facts, Langmuir probe diagnostics are applied very frequently to measuring plasma parameters. This book will be useful in teaching plasma diagnostics to undergraduate and graduate students in plasma physics courses. And it will also serve as a practical reference manual for physicists and engineers working in the growing area of plasma physics. The reader of this book will learn what kind of plasma parameters the Langmuir probe can measure, how to develop the probe diagnostics for specific cases, and how the probe data obtained should be processed to deduce reliable plasma parameters. In this book, the reader can find not only the basic physics information important to understanding the principles of probe operation, but also how the "real" probe disturbs plasma, and how it is possible to reconstruct undisturbed plasma parameters with available probe data.

Thruster Plume Plasma Diagnostics

Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781721798063
Total Pages : 26 pages
Book Rating : 4.7/5 (98 download)

DOWNLOAD NOW!

Book Synopsis Thruster Plume Plasma Diagnostics by : National Aeronautics and Space Administration (NASA)

Download or read book Thruster Plume Plasma Diagnostics written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-24 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although detailed near field (0 to 3 cm) information regarding the exhaust plume of a two kilowatt arc jet is available (refs. 1 to 6), there is virtually little or no information (outside of theoretical extrapolations) available concerning the far field (2.6 to 6.1 m). Furthermore real information about the plasma at distances between (3 to 6 m) is of critical importance to high technology satellite companies in understanding the effect of arc jet plume exhausts on space based power systems. It is therefore of utmost importance that one understands the exact nature of the interaction between the arc jet plume, the spacecraft power system and the surrounding electrical plasma environment. A good first step in understanding the nature of the interactions lies in making the needed plume parameter measurements in the far field. All diagnostic measurements are performed inside a large vacuum system (12 m diameter by 18 m high) with a full scale arc jet and solar array panel in the required flight configuration geometry. Thus, necessary information regarding the plume plasma parameters in the far field is obtained. Measurements of the floating potential, the plasma potential, the electron temperature, number density, density distribution, debye length, and plasma frequency are obtained at various locations about the array (at vertical distances from the arc jet nozzle: 2.6, 2.7, 2.8, 3.2, 3.6, 4.0, 4.9, 5.0, 5.4, 5.75, and 6.14 m). Plasma diagnostic parameters are measured for both the floating and grounded configurations of the arc jet anode and array. Spectroscopic optical measurements are then acquired in close proximity to the nozzle, and contamination measurements are made in the vicinity of the array utilizing a mass spectrometer and two Quartz Crystal Microbalances (QCM's). Galofaro, Joel T. and Vayner, Boris V. and Hillard, G. Barry and Chornak, Michael T. Glenn Research Center NASA/TM-2005-213837, E-15207

Homogeneous Turbulence Dynamics

Author : Pierre Sagaut
Publisher : Springer
ISBN 13 : 3319731629
Total Pages : 912 pages
Book Rating : 4.3/5 (197 download)

DOWNLOAD NOW!

Book Synopsis Homogeneous Turbulence Dynamics by : Pierre Sagaut

Download or read book Homogeneous Turbulence Dynamics written by Pierre Sagaut and published by Springer. This book was released on 2018-03-23 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides state-of-the-art results and theories in homogeneous turbulence, including anisotropy and compressibility effects with extension to quantum turbulence, magneto-hydodynamic turbulence and turbulence in non-newtonian fluids. Each chapter is devoted to a given type of interaction (strain, rotation, shear, etc.), and presents and compares experimental data, numerical results, analysis of the Reynolds stress budget equations and advanced multipoint spectral theories. The role of both linear and non-linear mechanisms is emphasized. The link between the statistical properties and the dynamics of coherent structures is also addressed. Despite its restriction to homogeneous turbulence, the book is of interest to all people working in turbulence, since the basic physical mechanisms which are present in all turbulent flows are explained. The reader will find a unified presentation of the results and a clear presentation of existing controversies. Special attention is given to bridge the results obtained in different research communities. Mathematical tools and advanced physical models are detailed in dedicated chapters.

Cavity Ring-Down Spectroscopy

Author : Giel Berden
Publisher : John Wiley & Sons
ISBN 13 : 9781444308242
Total Pages : 344 pages
Book Rating : 4.3/5 (82 download)

DOWNLOAD NOW!

Book Synopsis Cavity Ring-Down Spectroscopy by : Giel Berden

Download or read book Cavity Ring-Down Spectroscopy written by Giel Berden and published by John Wiley & Sons. This book was released on 2009-08-11 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cavity Ring-Down Spectroscopy: Techniques and Applications provides a practical overview of this valuable analytical tool, explaining the fundamental concepts and experimental methods, and illustrating important applications. Designed as both an introductory text and a reference source, this book is relevant for scientists unfamiliar with CRDS who are interested in using the technique in their research, as well as experienced users.

Pioneering Venus

Author : Richard O Fimmel
Publisher : Legare Street Press
ISBN 13 : 9781018576015
Total Pages : 0 pages
Book Rating : 4.5/5 (76 download)

DOWNLOAD NOW!

Book Synopsis Pioneering Venus by : Richard O Fimmel

Download or read book Pioneering Venus written by Richard O Fimmel and published by Legare Street Press. This book was released on 2022-10-27 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Development and Characterization of High-efficiency, High-specific Impulse Xenon Hall Thrusters

Author : Richard Robert Hofer
Publisher :
ISBN 13 :
Total Pages : 808 pages
Book Rating : 4.3/5 (91 download)

DOWNLOAD NOW!

Book Synopsis Development and Characterization of High-efficiency, High-specific Impulse Xenon Hall Thrusters by : Richard Robert Hofer

Download or read book Development and Characterization of High-efficiency, High-specific Impulse Xenon Hall Thrusters written by Richard Robert Hofer and published by . This book was released on 2004 with total page 808 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Large Space Structures & Systems in the Space Station Era

Author :
Publisher :
ISBN 13 :
Total Pages : 1042 pages
Book Rating : 4.F/5 ( download)

DOWNLOAD NOW!

Book Synopsis Large Space Structures & Systems in the Space Station Era by :

Download or read book Large Space Structures & Systems in the Space Station Era written by and published by . This book was released on 1991 with total page 1042 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Handbook of Atmospheric Electrodynamics (1995)

Author : Hans Volland
Publisher : CRC Press
ISBN 13 : 1351364189
Total Pages : 769 pages
Book Rating : 4.3/5 (513 download)

DOWNLOAD NOW!

Book Synopsis Handbook of Atmospheric Electrodynamics (1995) by : Hans Volland

Download or read book Handbook of Atmospheric Electrodynamics (1995) written by Hans Volland and published by CRC Press. This book was released on 2017-11-22 with total page 769 pages. Available in PDF, EPUB and Kindle. Book excerpt: The participation of such diverse scientific and technical disciplines as meteorology, astronomy, atmospheric electricity, ionospheric and magnetospheric physics, electromagnetic wave propagation, and radio techniques in the research of atmospherics means that results are published in scientific papers widely spread throughout the literature. This Handbook collects the latest knowledge on atmospherics and presents it in two volumes. Each chapter is written by an expert in his or her field. Topics include the physics of thunderclouds, thunder, global atmospheric electric currents, biological aspects of sferics, and various space techniques for detecting lightning within our own atmosphere as well as in the atmospheres of other planets. Up-to-date applications and methodology are detailed. Volumes I and II offer a comprehensive discussion that together will serve as an important resource for practitioners, professionals, and students alike.

Tropical Glaciers

Author : Georg Kaser
Publisher : Cambridge University Press
ISBN 13 : 9780521633338
Total Pages : 232 pages
Book Rating : 4.6/5 (333 download)

DOWNLOAD NOW!

Book Synopsis Tropical Glaciers by : Georg Kaser

Download or read book Tropical Glaciers written by Georg Kaser and published by Cambridge University Press. This book was released on 2002 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Glaciers in the tropics and their environmental consequences.

Near Discharge Cathode Assembly Plasma Potential Measurements in a 30-CM Nstar Type Ion Engine During Beam Extraction

Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781721815036
Total Pages : 34 pages
Book Rating : 4.8/5 (15 download)

DOWNLOAD NOW!

Book Synopsis Near Discharge Cathode Assembly Plasma Potential Measurements in a 30-CM Nstar Type Ion Engine During Beam Extraction by : National Aeronautics and Space Administration (NASA)

Download or read book Near Discharge Cathode Assembly Plasma Potential Measurements in a 30-CM Nstar Type Ion Engine During Beam Extraction written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-24 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Fresh from the Farm 6pk

Author : Rigby
Publisher :
ISBN 13 : 9781418914219
Total Pages : 0 pages
Book Rating : 4.9/5 (142 download)

DOWNLOAD NOW!

Book Synopsis Fresh from the Farm 6pk by : Rigby

Download or read book Fresh from the Farm 6pk written by Rigby and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Pioneer Venus

Author : Richard O. Fimmel
Publisher :
ISBN 13 : 9780964553712
Total Pages : 382 pages
Book Rating : 4.5/5 (537 download)

DOWNLOAD NOW!

Book Synopsis Pioneer Venus by : Richard O. Fimmel

Download or read book Pioneer Venus written by Richard O. Fimmel and published by . This book was released on 1995 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Global Exploration Roadmap

Author : Isecg
Publisher :
ISBN 13 : 9781457849107
Total Pages : 50 pages
Book Rating : 4.8/5 (491 download)

DOWNLOAD NOW!

Book Synopsis The Global Exploration Roadmap by : Isecg

Download or read book The Global Exploration Roadmap written by Isecg and published by . This book was released on 2013-10-24 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agencies participating in the International Space Exploration Coordination Group (ISECG) continue to advance a long-range international exploration strategy that begins with the International Space Station (ISS) and expands human presence in the solar system, leading ultimately to human missions to explore the surface of Mars.The Global Exploration Roadmap, first released in September 2011, has been updated in August 2013 to reflect updated agency plans and programmes as well as continue to facilitate stakeholder engagement in the effort to chart an international roadmap to Mars. Figures. This is a print on demand report.