The Mobility, Diffusion, and Clustering of K(+) Ions in Gases. Report II. PDF Download
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Author: D. R. James
Publisher:
ISBN:
Category :
Languages : en
Pages : 21
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Book Description
The authors have used a drift tube mass spectrometer to measure the mobilities and longitudinal diffusion coefficients of K(+) ions in argon at 300K. The range of E/N extends from 1 to 610 Td, where E is the electric field intensity and N is the number density of the neutral gas. The zero-field reduced mobility of K(+) in argon was found. The diffusion coefficient data is compared with values obtained from the Wannier theory for motion of ions in strong electric fields. Also included are tabulated transport data for K(+) in Ar, N2, and CO. (Author).
Author: D. R. James
Publisher:
ISBN:
Category :
Languages : en
Pages : 21
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Book Description
The authors have used a drift tube mass spectrometer to measure the mobilities and longitudinal diffusion coefficients of K(+) ions in argon at 300K. The range of E/N extends from 1 to 610 Td, where E is the electric field intensity and N is the number density of the neutral gas. The zero-field reduced mobility of K(+) in argon was found. The diffusion coefficient data is compared with values obtained from the Wannier theory for motion of ions in strong electric fields. Also included are tabulated transport data for K(+) in Ar, N2, and CO. (Author).
Author: G. M. Thomson
Publisher:
ISBN:
Category :
Languages : en
Pages : 38
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Book Description
The authors have measured, with a drift tube mass spectrometer, the mobilities and longitudinal diffusion coefficients of K(+) ions in nitrogen and carbon monoxide at 300K. The zero-field reduced mobilities of K(+) ions in N2 and CO were determined. The experimental diffusion coefficients were compared with the predictions of an equation developed by Wannier on the assumption that the ion-molecule interaction consists of only the attractive polarization force. Comparison is also made with a modified version of this equation which contains the ionic drift velocity rather than the mean free time. Also observed was the clustering of single molecules of CO2, NO, CO, N2, O2, Ar, D2, Ne, and He to K(+) ions.
Author: Earl Wadsworth McDaniel
Publisher: John Wiley & Sons
ISBN:
Category : Science
Languages : en
Pages : 390
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Book Description
Author: Edward A. Mason
Publisher: Wiley-VCH
ISBN:
Category : Science
Languages : en
Pages : 584
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Book Description
Presents thorough coverage of the transport properties of ions in gases. Starts from first principles, making this book useful to those new to the field as well as to experts. Describes the motions of ions in gases in electric fields, methods for measuring mobilities and diffusion coefficients, and pitfalls in measuring these quantities. Provides a detailed development of the theory of transport processes in the context of the kinetic theory of gases. Includes relevant experimental techniques and an index to experimental data.
Author: G.A. Eiceman
Publisher: CRC Press
ISBN: 1439859981
Category : Science
Languages : en
Pages : 418
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Book Description
Since the turn of the twenty-first century, applications of ion mobility spectrometry (IMS) have diversified, expanding their utility in the military and security spheres and entering the realms of clinical practice and pharmaceutical exploration. Updated and expanded, the third edition of Ion Mobility Spectrometry begins with a comprehensive discu
Author: Boris M. Smirnov
Publisher: John Wiley & Sons
ISBN: 3527637117
Category : Science
Languages : en
Pages : 447
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Book Description
A comprehensive and readily accessible work for studying the physics of ionized gases, based on "Physics of Ionized Gases". The focus remains on fundamentals rather than on the details required for interesting but difficult applications, such as magnetic confinement fusion, or the phenomena that occur with extremely high-intensity short-pulse lasers. However, this new work benefits from much rearranging of the subject matter within each topic, resulting in a more coherent structure. There are also some significant additions, many of which relate to clusters, while other enlarged sections include plasmas in the atmosphere and their applications. In each case, the emphasis is on a clear and unified understanding of the basic physics that underlies all plasma phenomena. Thus, there are chapters on plasma behavior from the viewpoint of atomic and molecular physics, as well as on the macroscopic phenomena involved in physical kinetics of plasmas and the transport of radiation and of charged particles within plasmas. With this grounding in the fundamental physics of plasmas, the notoriously difficult subjects of nonlinear phenomena and of instabilities in plasmas can then be treated with comprehensive clarity. The work is rounded off with appendices containing information and data of great importance and relevance that are not easily found in other books. Valuable reading for graduate and PhD physics students, and a reference for researchers in low-temperature ionized gases-plasma processing, edge region fusion plasma physics, and atmospheric plasmas.
Author: Earl W. McDaniel
Publisher:
ISBN:
Category :
Languages : en
Pages : 20
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Book Description
Research on slow ions in gases with a drift tube mass spectrometer is described. The research dealt with the measurement of ionic mobilities, diffusion coefficients, and reaction rates. Emphasis was placed on studies of clustering of K(+) ions in N2, H2, He, Ne, Ar, O2, NO, CO, and CO2; on tests of the Wannier diffusion equations; on the differences in behavior of K(+) ions in N2 and CO; and on measurement on ions, formed from CO, drifting in carbon monoxide gas. Improvements in the experimental apparatus and analytical techniques are described, and plans for the immediate future are discussed. (Author).
Author: Alexandre A. Shvartsburg
Publisher: CRC Press
ISBN: 9781420051070
Category : Science
Languages : en
Pages : 322
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Book Description
Over the last decade, scientific and engineering interests have been shifting from conventional ion mobility spectrometry (IMS) to field asymmetric waveform ion mobility spectrometry (FAIMS). Differential Ion Mobility Spectrometry: Nonlinear Ion Transport and Fundamentals of FAIMS explores this new analytical technology that separates and characterizes ions by the difference between their mobility in gases at high and low electric fields. It also covers the novel topics of higher-order differential IMS and IMS with alignment of dipole direction. The book relates the fundamentals of FAIMS and other nonlinear IMS methods to the physics of gas-phase ion transport. It begins with the basics of ion diffusion and mobility in gases, covering the main attributes of conventional IMS that are relevant to all IMS approaches. Building on this foundation, the author reviews diverse high-field transport phenomena that underlie differential IMS. He discusses the conceptual implementation and first-principles optimization of FAIMS as a filtering technique, emphasizing the dependence of FAIMS performance metrics on instrumental parameters and properties of ion species. He also explores ion reactions in FAIMS caused by field heating and the effects of inhomogeneous electric field in curved FAIMS gaps. Written by an accomplished scientist in the field, this state-of-the-art book supplies the foundation to understand the new technology of nonlinear IMS methods.
Author: B.M. Smirnov
Publisher: CRC Press
ISBN: 9782881246975
Category : Science
Languages : en
Pages : 296
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Book Description
Smirnov (plasma chemistry, Institute of High Temperatures, Moscow) presents a comprehensive introduction to cluster ions and Van der Waals molecules for graduates and researchers in chemistry. He discusses the current ideas on the operant physics and chemistry, and reports numerical data on the parameters of the entities and processes involving them. First published in Russian in 1983. Annotation copyrighted by Book News, Inc., Portland, OR
Author: Boris M. Smirnov
Publisher: John Wiley & Sons
ISBN: 9783527628667
Category : Science
Languages : en
Pages : 442
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Book Description
This reference on cluster physics in materials science draws upon the author's unrivalled experience in plasma science. He covers in detail electromagnetic effects, cluster motion and growth, as well as aerosols, providing the knowledge instrumental for an understanding of nanostructure formation. Around 400 case studies enable readers to directly relate the methods to their own individual tasks or projects.
