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Author: Alan D. Bailey
Publisher:
ISBN:
Category : Emission spectroscopy
Languages : en
Pages : 24
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Book Description
This report presents the positive-ion mass spectrometer that was part of a SWIR rocketborne electron-accelerator experiment. A quadrupole mass filter with a specially designed ion collection configuration is described. Special attention is given to the problem introduced by high positive vehicle potentials which result from the high emission currents of the electron-accelerator. A comprehensive ion mass scanning program is described and important instrument parameters are specified. Typical data is included only to illustrate instrument performance.
Author: Alan D. Bailey
Publisher:
ISBN:
Category : Emission spectroscopy
Languages : en
Pages : 24
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Book Description
This report presents the positive-ion mass spectrometer that was part of a SWIR rocketborne electron-accelerator experiment. A quadrupole mass filter with a specially designed ion collection configuration is described. Special attention is given to the problem introduced by high positive vehicle potentials which result from the high emission currents of the electron-accelerator. A comprehensive ion mass scanning program is described and important instrument parameters are specified. Typical data is included only to illustrate instrument performance.
Author: Alan D. Bailey
Publisher:
ISBN:
Category : Emission spectroscopy
Languages : en
Pages : 0
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Book Description
This report presents the positive-ion mass spectrometer that was part of a SWIR rocketborne electron-accelerator experiment. A quadrupole mass filter with a specially designed ion collection configuration is described. Special attention is given to the problem introduced by high positive vehicle potentials which result from the high emission currents of the electron-accelerator. A comprehensive ion mass scanning program is described and important instrument parameters are specified. Typical data is included only to illustrate instrument performance.
Author: R. R. O'Neil
Publisher:
ISBN:
Category : Electron accelerators
Languages : en
Pages : 48
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Book Description
Author: Raimundas Sukys
Publisher:
ISBN:
Category :
Languages : en
Pages : 42
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Book Description
Bias and signal processing circuits designed for a mass spectrometer in the project EXCEDE: SWIR experiment are described in this report. In this experiment a rocket-based electron gun injects a stream of electrons into the atmosphere. This causes a buildup of a positive charge on the vehicle severely limiting the measurement capability of the positive ion mass spectrometer. To overcome this limitation under a wide range of vehicle potential buildup a varying negative bias voltage is applied to the front plate and the grid-rod structure of the quadrupole mass filter. Circuits generating and controlling the variable bias voltages are described in detail. Logarithmic data signal processing circuits and modifications, dictated by the bias requirements, of some already existing circuits are presented. (Author).
Author: Robert R. O'Neil
Publisher:
ISBN:
Category : Atmosphere, Upper
Languages : en
Pages : 44
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Book Description
EXCEDE is a program designed to study atmospheric infrared emissive processes induced by a rocketborne electron accelerator in the altitude range 80 to 140 km. The primary scientific interest is the investigation of the detailed production and loss processes of various excited electronic and vibrational states resulting in optical and infrared emission as energetic primary electrons and their secondary and all subsequent generation electrons are stopped in the atmosphere. The electron-induced optical and infrared emissions simulate natural auroral processes with the very significant advantage that the dosing conditions of electron energy and power, deposition volume and altitude, and dosing duration are parameters that may be controlled and monitored. To date, three payloads have been launched in the EXCEDE series of artificial auroral experiments. The program status is reviewed and a follow on experiment, EXCEDE II, is described. Both rocket-based and ground-based imaging and spectro-radiometric instruments are proposed. The feasibility of the scientific approach, the magnitude of the atmospheric emissions, the capabilities of ground-support systems, and the engineering design of the proposed experiment are extensions of the technology base established in the earlier EXCEDE launches. (Author).
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1008
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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: Alfred Benninghoven
Publisher: Springer Science & Business Media
ISBN: 3642827241
Category : Science
Languages : en
Pages : 578
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Book Description
This volume contains the proceedings of the Fifth International Confer ence on Secondary Ion Mass Spectrometry (SIMS V), held at the Capitol Holiday Inn, Washington, DC, USA, from September 30 to October 4, 1985. The conference was the fifth in a series of conferences held bienni ally. Previous conferences were held in Miinster (1977), Stanford (1979), Budapest (1981), and Osaka (1983). SIMS V was organized by Dr. R.J. Colton of the Nayal Research Lab oratory and Dr. D.S. Simons of the National Bureau of Standards un der the auspices of the International Organizing Committee chaired by Prof. A. Benninghoven of the Universitat Miinster. Dr. Richard F.K. Herzog served as the honorary chairman of SIMS V. While Dr. Herzog is best known to the mass spectrometry community for his theoretical development of a mass spectrometer design, known as the Mattauch-Herzog geometry, he also made several early and impor tant contributions to SIMS. In 1949, Herzog and Viehbock published a description of the first instrument designed to study secondary ions pro duced by bombardment from a beam of ions generated in a source that was separated from the sample by a narrow tube. Later at the GCA Cor poration, he brought together a team of researchers including H.J. Liebl, F.G. Riidenauer, W.P. Poschenrieder and F.G. Satkiewicz, who designed and built, and carried out applied research with the first commercial ion microprobe.
Author: Kurt F. J. Heinrich
Publisher:
ISBN:
Category : Mass spectrometry
Languages : en
Pages : 244
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Book Description
Author: Robert G. Wilson
Publisher: Wiley-Interscience
ISBN:
Category : Science
Languages : en
Pages : 392
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Book Description
Seco ndary Ion Mass Spectrometry Basic Concepts, Instrumental Aspects, Applications and Trends (Volume 86 in Chemical Analysis: A Series of Monographs on Analytical Chemistry and Its Applications) A. Benninghoven, F. G. Rüdenauer, and H. W. Werner "[This book] is (and probably will be for a long time ahead) the standard book on secondary ion mass spectrometry." —Trends in Analytical Chemistry "This is a monumental work, and contains nearly 600 illustrations and over 2,000 references covering nearly all the essential published information up to 1985. The book will certainly find its place as a reference work in most laboratories using this methodology" —Analytica Chimica Acta 1987 (0 471-01056-1) 1,227 pp. Secondary Ion Mass Spectrometry Proceedings of the Sixth International Conference on Secondary Ion Mass Spectrometry (SIMS VI) Edited by A. Benninghoven, A.M. Huber, and H. W. Werner "The international SIMS conferences have been held every two years since 1977. They are recognized as one of the major forums for scientists, instrument manufacturers, and other researchers actively engaged in this rapidly expanding field…this volume is a valuable account of the latest advances in the field of SIMS, and of the research trends of some of the most respected experts in the field.…it is recommended for the libraries of all academic and industrial institutions where SIMS research is ongoing.…it should prove a valuable reference source for years to come." —Applied Spectroscopy 1988 (0 471-91832-6) 1,078 pp.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
