Download or read book Quadrupole Ion Neutral Mass Spectrometer for Space Shuttle Applications written by and published by . This book was released on 1986 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Quadrupole Ion/Neutral Mass Spectrometer (QINMS) was developed for the fourth flight of the Space Shuttle in June and July of 1982. Several additional instruments have been built for other programs using the same design. The instruments are designed to measure the neutral and positive ion composition in the vicinity of the Space Shuttle or similar satellites. Other experimental capabilities include the measurements of total neutral pressure, total ion density, and species kinetic energy distributions. This report describes in detail the design and construction of the QINMS instruments, the integration requirements, ground testing and calibration procedures, typical flight operations, and finally, data requirements.
Download or read book Quadrupole Ion neutral Mass Spectrometer for Space Shuttle Applications written by Donald Edward Hunton and published by . This book was released on 1986 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Quadrupole Ion/Neutral Mass Spectrometer (QINMS) was developed for the fourth flight of the Space Shuttle in June and July of 1982. Several additional instruments have been built for other programs using the same design. The instruments are designed to measure the neutral and positive ion composition in the vicinity of the Space Shuttle or similar satellites. Other experimental capabilities include the measurements of total neutral pressure, total ion density, and species kinetic energy distributions. This report describes in detail the design and construction of the QINMS instruments, the integration requirements, ground testing and calibration procedures, typical flight operations, and finally, data requirements.
Download or read book Design of an Improved Miniature Ion Neutral Mass Spectrometer for NASA Applications written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-17 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ion optics of NASA's Ion Neutral Mass Spectrometer (INMS) sensor was simulated with three dimensional models of the open source, the quadrupole deflector, the exit lens system and the quadrupole mass analyzer to design more compact models with lower weight. Comparison of calculated transmission with experimental results shows good agreement. Transmission analyses with varying geometrical parameters and voltages throw light on possible ways of reducing the size of the sensor. Trajectories of ions of mass 1-99 amu were simulated to analyze and optimize transmission. Analysis of open source transmission with varying angle of attack shows that the angular acceptance can be considerably increased by programming the voltages on the ion trap/ collimator. Analysis of transmission sensitivity to voltages and misalignments of the quadrupole deflector rods indicate that increased transmission is possible with a geometrically asymmetrical deflector and a deflector can be designed with much lower sensitivities of transmission. Bringing the disks closer together can decrease the size of the quadrupole deflector and also increase transmission. The exit lens system can be redesigned to be smaller by eliminating at least one electrode entirely without loss of transmission. Ceramic materials were investigated to find suitable candidates for use in the construction of lighter weight mass spectrometer. A high-sensitivity, high-resolution portable gas chromatograph mass spectrometer with a mass range of 2-700 amu has been built and will be commercialized in Phase 3. Swaminathan, Viji K. and Alig, Roger C. Goddard Space Flight Center MASS SPECTROMETERS; MINIATURIZATION; DESIGN ANALYSIS; IONIC MOBILITY; PORTABLE EQUIPMENT; COLLIMATORS; DEFLECTORS; ELECTRIC POTENTIAL; GAS CHROMATOGRAPHY; HIGH RESOLUTION; MAGNETIC LENSES; QUADRUPOLES; SENSITIVITY; THREE DIMENSIONAL MODELS; WEIGHT (MASS)...
Download or read book The Design of an Ion Neutral Mass Spectrometer to be Used in the Shuttle Environment written by Charles J. Risicato and published by . This book was released on 1984 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report discussed the development of instrumentation to be flown on the space shuttle. The instrument is a quadrapole mass spectrometer designed to measure preselected masses in the 1 AMU to 70 AMU region. A discussion of the various circuits will be included in this report along with a full set of schematics, drawings, wiring lists and sample control program.
Download or read book Quadrupole Mass Spectrometry and Its Applications written by Peter H. Dawson and published by Elsevier. This book was released on 2013-10-22 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quadrupole Mass Spectrometry and Its Applications provides a comprehensive discussion of quadrupoles and their applications. It proceeds from a general explanation of the action of radiofrequency quadrupole fields to the description of their utilization in mass analyzers—such as the quadrupole mass filter, the monopole, the three-dimensional quadrupole ion trap, and various time-of-flight spectrometers—and finally to the characteristic applications of quadrupoles. A multi-author format has been adopted to provide broader-than-usual viewpoint in the book. The book begins by explaining the principles of operation of quadrupole devices. These include ion trajectories and computer simulations of performance; analytical theory; numerical methods of calculation of performance, including the recently developed application of phase-space dynamics; and fringing fields and other field imperfections. Subsequent chapters provide design and performance evaluations of the mass filter, the monopole, ion traps, and time-of-flight instruments; and describe areas of application where quadrupole devices have made the greatest impact because of their particular advantages and disadvantages.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book LDEF Materials Results for Spacecraft Applications written by and published by . This book was released on 1994 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Thruster Firings on the Shuttle Environment written by Donald Edward Hunton and published by . This book was released on 1990 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The changes in the neutral gas composition surrounding the Space Shuttle caused by the Shuttle's Vernier Reaction Control System (VRCS) and Orbital Maneuvering System (OMS) rocket engines were measured with a quadrupole mass spectrometer aboard STS-4. There are substantial differences between the measured composition changes in the payload bay and the calculated composition of the thruster exhaust plumes. These differences can be explained by kinematic effects that occur as the exhaust products collide with surfaces and other gas phase species in the Shuttle environment. Hydrogen, because of its light mass, is enriched in the return flux to the spacecraft, and tends to permeate the Shuttle environment during thruster firings more easily than heavier species. The effect of the thruster firings on the mass spectrometer also depended on the attitude of the instrument with respect to the velocity vector. When the mass spectrometer was pointed into the velocity vector, decreases in atomic oxygen concentration were detected during the engine firings. Keywords: Shuttle environment; Spacecraft contamination; Rocket engines; Mass spectroscopy. (jes).
Download or read book Analysis of Lightweight Gases by Quadrupole Ion Trap Mass Spectrometry for the Safety of the American Space Shuttle Program written by Andrew Keith Ottens and published by . This book was released on 2003 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Thruster Firings on the Shuttle Environment 1 written by Donald Edward Hunton and published by . This book was released on 1990 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The changes in the neutral gas composition surrounding the Space Shuttle caused by the Shuttle's Vernier Reaction Control System (VRCS) and Orbital Maneuvering System (OMS) rocket engines were measured with a quadrupole mass spectrometer aboard STS-4. There are substantial differences between the measured composition changes in the payload bay and the calculated composition of the thruster exhaust plumes. These differences can be explained by kinematic effects that occur as the exhaust products collide with surfaces and other gas phase species in the Shuttle environment. Hydrogen, because of its light mass, is enriched in the return flux to the spacecraft, and tends to permeate the Shuttle environment during thruster firings more easily than heavier species. The effect of the thruster firings on the mass spectrometer also depended on the attitude of the instrument with respect to the velocity vector. When the mass spectrometer was pointed into the velocity vector, decreases in atomic oxygen concentration were detected during the engine firings.
Download or read book Quadrupole Ion Trap Mass Spectrometry written by Raymond E. March and published by John Wiley & Sons. This book was released on 2005-09-15 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: A definitive reference, completely updated Published in 1989, the First Edition of this book, originally entitled Quadrupole Storage Mass Spectrometry, quickly became the definitive reference in analytical laboratories worldwide. Revised to reflect scientific and technological advances and new applications in the field, the Second Edition includes new chapters covering: * New ion trap instruments of high sensitivity * Peptide analysis by liquid chromatography/ion trap tandem mass spectrometry * Analytical aspects of ion trap mass spectrometry combined with gas chromatography * Simulation of ion trajectories in the ion trap One additional chapter discusses the Rosetta mission, a "comet chaser" that was sent on a ten-year journey in 2004 to study the comet Churyumov-Gerasimenko using, among other instruments, a GC/MS system incorporating a specially designed ion trap mass spectrometer. This comprehensive reference also includes discussions of the history of the quadrupole ion trap, the theory of quadrupole mass spectrometry, the dynamics of ion-trapping chemistry in the quadrupole ion trap, the cylindrical ion trap, miniature traps, and linear ion traps. Complete with conclusions and references, this primer effectively encapsulates the body of knowledge on quadrupole ion trap mass spectrometry. With its concise descriptions of the theory of ion motion and the principles of operation, Quadrupole Ion Trap Mass Spectrometry, Second Edition is ideal for new users of quadrupole devices, as well as for scientists, researchers, and graduate and post-doctoral students working in analytical laboratories.
Download or read book LDEF 69 Months in Space Third Post Retrieval Symposium Part 3 written by and published by . This book was released on 1995 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book THE DESIGN OF ION NEUTRAL MASS SPECTROMETER TO BE USED IN THE SHUTTLE ENIRONMENT written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Research Papers written by and published by . This book was released on with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of a Quadrupole Ion Trap Mass Spectrometer for the Determination of Stable Isotope Ratios written by Simeon James Barber and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1988 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt:
