Electron Collisions With Positive Ions Final Report June 15 1990 June 14 1992

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Electron Collisions with Positive Ions. Final Report, June 15, 1990--June 14, 1992

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ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (684 download)

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Download or read book Electron Collisions with Positive Ions. Final Report, June 15, 1990--June 14, 1992 written by and published by . This book was released on 1997 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report concerns a program of computation of cross sections for electron impact excitation and ionization of ions. A review of progress made in the 1980s for calculations on electron impact excitation of atoms and ions for low and intermediate energy ranges concludes that the effect of continuum channels is very important to include in close coupling calculations. This may be achieved by use of pseudostates or the coupled-channels optical-potential method or the intermediate energy R-matrix method. Those methods have been applied mainly to electron atom scattering to date and much remains to be accomplished in electron-ion scattering. Further, for multicharged ions, contributions of excitation-autoionization and resonant-excitation-double-autoionization to total ionization cross sections are important and underscore the role of two-electron correlation effects.

Energy Research Abstracts

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ISBN 13 :
Total Pages : 602 pages
Book Rating : 4.:/5 (3 download)

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Download or read book Energy Research Abstracts written by and published by . This book was released on 1992 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Electron Transfer, Ionization, and Excitation in Atomic Collisions. Progress Report, June 15, 1989--June 14, 1992

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ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (727 download)

Book Synopsis Electron Transfer, Ionization, and Excitation in Atomic Collisions. Progress Report, June 15, 1989--June 14, 1992 by :

Download or read book Electron Transfer, Ionization, and Excitation in Atomic Collisions. Progress Report, June 15, 1989--June 14, 1992 written by and published by . This book was released on 1992 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research being carried out at Penn State by Winter and Alston addresses the fundamental processes of electron transfer, ionization, and excitation in ion-atom (and ion-ion) collisions. The focus is on intermediate- and higher-energy collisions, corresponding to proton energies of about 25 kilo-electron-volts (keV) or larger. At intermediate energies, where the transition probabilities are not small, many states must be coupled in a large calculation, while at higher energies, perturbative approaches may be used. Several studies have been carried out in the current three-year period; most of these treat systems with only one or two electrons, so that fewer approximations need be made and the basic collisional mechanisms can be more clearly described.

Electron Transfer, Ionization, and Excitation in Atomic Collisions. Progress Report, June 15, 1992--June 14, 1995

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ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (683 download)

Book Synopsis Electron Transfer, Ionization, and Excitation in Atomic Collisions. Progress Report, June 15, 1992--June 14, 1995 by :

Download or read book Electron Transfer, Ionization, and Excitation in Atomic Collisions. Progress Report, June 15, 1992--June 14, 1995 written by and published by . This book was released on 1995 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research program of Winter and Alston addresses the fundamental processes of electron transfer, ionization, and excitation in ion-atom, ion-ion, and ion-molecule collisions. Attention is focussed on one- and two-electron systems and, more recently, quasi-one-electron systems whose electron-target-core interaction can be accurately modeled by one-electron potentials. The basic computational approaches can then be taken with few, if any, approximations, and the underlying collisional mechanisms can be more clearly revealed. Winter has focussed on intermediate collision energies (e.g., proton energies for p-He collisions on the order of 100 kilo-electron volts), in which many electron states are strongly coupled during the collision and a coupled-state approach, such as a coupled-Sturmian-pseudostate approach, is appropriate. Alston has concentrated on higher collision energies (million electron-volt energies), or asymmetric collision systems, for which the coupling of the projectile is weaker with, however, many more target states being coupled together so that high-order perturbation theory is essential. Several calculations by Winter and Alston are described, as set forth in the original proposal.

Government Reports Annual Index

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ISBN 13 :
Total Pages : 1754 pages
Book Rating : 4.:/5 (319 download)

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Advances in Emulsion Polymerisation

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ISBN 13 :
Total Pages : 55 pages
Book Rating : 4.:/5 (256 download)

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Download or read book Advances in Emulsion Polymerisation written by and published by . This book was released on 1990 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Government Reports Announcements & Index

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ISBN 13 :
Total Pages : 1662 pages
Book Rating : 4.E/5 ( download)

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Fundamentals of Electric Propulsion

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

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.

Seize the High Ground

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Author : James A. Walker
Publisher : Government Printing Office
ISBN 13 :
Total Pages : 380 pages
Book Rating : 4.:/5 (31 download)

Book Synopsis Seize the High Ground by : James A. Walker

Download or read book Seize the High Ground written by James A. Walker and published by Government Printing Office. This book was released on 2003 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: "[Seize the high ground is a] narrative history of the Army's aerospace experience from the 1950s to the present. The focus is on ballistic missile defense, from the early NIKE-HERCULES missile program through the SAFEGUARD acquisition site allowed by the 1972 ABM Treaty to the more advanced 'Star Wars' concepts studies toward the end of the century. [What is] covered is not only the technological response to the threat but the organizational and tactical development of the commands and units responsible for the defense mission"--CMH website.

Quantities, Units and Symbols in Physical Chemistry

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Author : International Union of Pure and Applied Chemistry. Physical and Biophysical Chemistry Division
Publisher : Royal Society of Chemistry
ISBN 13 : 0854044337
Total Pages : 240 pages
Book Rating : 4.8/5 (54 download)

Book Synopsis Quantities, Units and Symbols in Physical Chemistry by : International Union of Pure and Applied Chemistry. Physical and Biophysical Chemistry Division

Download or read book Quantities, Units and Symbols in Physical Chemistry written by International Union of Pure and Applied Chemistry. Physical and Biophysical Chemistry Division and published by Royal Society of Chemistry. This book was released on 2007 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prepared by the IUPAC Physical Chemistry Division this definitive manual, now in its third edition, is designed to improve the exchange of scientific information among the readers in different disciplines and across different nations. This book has been systematically brought up to date and new sections added to reflect the increasing volume of scientific literature and terminology and expressions being used. The Third Edition reflects the experience of the contributors with the previous editions and the comments and feedback have been integrated into this essential resource. This edition has been compiled in machine-readable form and will be available online.

Atomic and Plasma-material Interaction Data for Fusion

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (249 download)

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The Sun, the Earth, and Near-earth Space

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Author : John A. Eddy
Publisher : Government Printing Office
ISBN 13 : 9780160838088
Total Pages : 316 pages
Book Rating : 4.8/5 (38 download)

Book Synopsis The Sun, the Earth, and Near-earth Space by : John A. Eddy

Download or read book The Sun, the Earth, and Near-earth Space written by John A. Eddy and published by Government Printing Office. This book was released on 2009 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: " ... Concise explanations and descriptions - easily read and readily understood - of what we know of the chain of events and processes that connect the Sun to the Earth, with special emphasis on space weather and Sun-Climate."--Dear Reader.

Strengthening Forensic Science in the United States

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Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309142393
Total Pages : 348 pages
Book Rating : 4.3/5 (91 download)

Book Synopsis Strengthening Forensic Science in the United States by : National Research Council

Download or read book Strengthening Forensic Science in the United States written by National Research Council and published by National Academies Press. This book was released on 2009-07-29 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scores of talented and dedicated people serve the forensic science community, performing vitally important work. However, they are often constrained by lack of adequate resources, sound policies, and national support. It is clear that change and advancements, both systematic and scientific, are needed in a number of forensic science disciplines to ensure the reliability of work, establish enforceable standards, and promote best practices with consistent application. Strengthening Forensic Science in the United States: A Path Forward provides a detailed plan for addressing these needs and suggests the creation of a new government entity, the National Institute of Forensic Science, to establish and enforce standards within the forensic science community. The benefits of improving and regulating the forensic science disciplines are clear: assisting law enforcement officials, enhancing homeland security, and reducing the risk of wrongful conviction and exoneration. Strengthening Forensic Science in the United States gives a full account of what is needed to advance the forensic science disciplines, including upgrading of systems and organizational structures, better training, widespread adoption of uniform and enforceable best practices, and mandatory certification and accreditation programs. While this book provides an essential call-to-action for congress and policy makers, it also serves as a vital tool for law enforcement agencies, criminal prosecutors and attorneys, and forensic science educators.

Space Shuttle Missions Summary (NASA/TM-2011-216142)

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Author : Robert D. Legler
Publisher : www.Militarybookshop.CompanyUK
ISBN 13 : 9781782662235
Total Pages : 300 pages
Book Rating : 4.6/5 (622 download)

Book Synopsis Space Shuttle Missions Summary (NASA/TM-2011-216142) by : Robert D. Legler

Download or read book Space Shuttle Missions Summary (NASA/TM-2011-216142) written by Robert D. Legler and published by www.Militarybookshop.CompanyUK. This book was released on 2011-09-01 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Full color publication. This document has been produced and updated over a 21-year period. It is intended to be a handy reference document, basically one page per flight, and care has been exercised to make it as error-free as possible. This document is basically "as flown" data and has been compiled from many sources including flight logs, flight rules, flight anomaly logs, mod flight descent summary, post flight analysis of mps propellants, FDRD, FRD, SODB, and the MER shuttle flight data and inflight anomaly list. Orbit distance traveled is taken from the PAO mission statistics.

41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit 10-13 July 2005, Tucson, Arizona: 05-3650 - 05-3699

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ISBN 13 :
Total Pages : 524 pages
Book Rating : 4.0/5 ( download)

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Electron-Molecule Collisions

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Author : Isao Shimamura
Publisher : Springer Science & Business Media
ISBN 13 : 1461323576
Total Pages : 578 pages
Book Rating : 4.4/5 (613 download)

Book Synopsis Electron-Molecule Collisions by : Isao Shimamura

Download or read book Electron-Molecule Collisions written by Isao Shimamura and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scattering phenomena play an important role in modern physics. Many significant discoveries have been made through collision experiments. Amongst diverse kinds of collision systems, this book sheds light on the collision of an electron with a molecule. The electron-molecule collision provides a basic scattering problem. It is scattering by a nonspherical, multicentered composite particle with its centers having degrees of freedom of motion. The molecule can even disintegrate, Le., dissociate or ionize into fragments, some or all of which may also be molecules. Although it is a difficult problem, the recent theoretical, experimental, and computational progress has been so significant as to warrant publication of a book that specializes in this field. The progress owes partly to technical develop ments in measurements and computations. No less important has been the great and continuing stimulus from such fields of application as astrophysics, the physics of the earth's upper atmosphere, laser physics, radiation physics, the physics of gas discharges, magnetohydrodynamic power generation, and so on. This book aims at introducing the reader to the problem of electron molecule collisions, elucidating the physics behind the phenomena, and review ing, to some extent, up-to-date important results. This book should be appropri ate for graduate reading in physics and chemistry. We also believe that investi gators in atomic and molecular physics will benefit much from this book.

Oral Health in America

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ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.3/5 (91 download)

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Download or read book Oral Health in America written by and published by . This book was released on 2000 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: