Calculations of collision narrowing of the quadrupole lines in molecular hydrogen
Pressure-narrowing theory applied to calculating equivalent widths of lines in quadrupole rotation- vibration spectrum of molecular hydrogen
James, T. C.↗
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Results for “Quadrupole”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Nuclear quadrupole resonance study of the inductive effect in chemical bonding in chloroalkenes
Inductive effect in C-Cl chemical bonds in chloroalkenes, using nuclear quadrupole resonance frequencies shifts
Koltenbah, D. E.↗
A voltage programmed oscillator for quadrupole mass spectrometers
Voltage programmed RF oscillator /VPO/ for spaceborne quadrupole mass spectrometer, describing transistorized circuitry
Zipf, E. C.↗
A method for the calculation of large numbers of dipole and quadrupole transition probabilities
Calculation method for large numbers of dipole and quadrupole transition probabilities
Freer, C. S.↗
Quadrupole ion entrance mask study
Ion masking in quadrupole mass spectrometer to eliminate unstable ion penetration
Source record↗
Quadrupole segmented rod study
Use of segmented rods in operation of quadrupole mass spectrometer
Source record↗
Summary of the development of the specialized quadrupole mass spectrometer, phase 5
Development of specialized quadrupole mass spectrometer with high resolution and dynamic range increase
Ierokomos, N.↗
Quadrupole segmented rod study
Sensitivity of quadrupole mass spectrometer with segmented rod geometry
Ierokomos, N.↗
Quadrupole ion entrance mask study
Theoretical and computer analyses of unstable ions in quadrupole mass spectrometer with ion source masking
Ierokomos, N.↗
Electric quadrupole transitions in muonic Pb208
Electric quadrupole atomic transitions in muonic PB208, charting X ray spectrum showing transitions
Jenkins, D. A.↗
Separation of relativity effects and effects due to a quadrupole moment of the sun in time- delay measurements
Relativity and solar quadrupole moment effects in time delay measurements of signal traveling from earth to artificial satellites
Richard, J.-P.↗
Theoretical and experimental comparisons of quadrupole mass analyzers with round and hyperbolic field-forming surfaces
Theoretical and experimental performance studies of quadrupole mass analyzers with round and hyperbolic field forming surfaces, noting resolving power superiority of hyperbolic rods
Brubaker, W. M.↗
Computer controlled operating and data handling system for a quadrupole mass spectrometer
Computer controlled data handling system for quadrupole mass spectrometer performing on-line chemical analysis of rocket chamber combustion gases
Hafner, F. W.↗
Ion-quadrupole effects in ion-molecule collisions
Ion-quadrupole effects in ion-molecule collisions by numerical calculations of capture cross sections and computer-plotter studies of ion trajectories
Dugan, J. V., Jr.↗
A thermosphere composition measurement using a quadrupole mass spectrometer with a side energy focussing quasi-open ion source
The atomic oxygen concentration in the altitude range 130 to 240 km was determined through the use of a quadrupole spectrometer with a strongly focussing ion source. The instrument is used in the Thermosphere Probe in a manner that greatly increases the proportion of measured oxygen ions that have not experienced a surface collision and permits quantitative evaluation of surface recombination and thermalization effects which inevitably enter all spectrometer determinations. The data obtained strengthen the concept that consideration of surface effects is significant in quantifying spectrometer measurements of reactive gases, and tend to be in agreement with von Zahn's recent results.
Niemann, H. B.↗
Spacecraft applications of quadrupole mass spectrometry
Techniques of mass spectrometry are reviewed and the theory of the quadrupole mass spectrometer (QMS) is discussed. The QMS is shown to have several advantages over older types of mass spectrometers. The QMS has been flown on a large number of rockets and several satellites. More sophisticated versions of the QMS are proposed for future satellites. Special emphasis is placed on problems of contamination which are likely to be encountered on a large and complex satellite like the Advanced Technology Satellite ATS-G. The development of a QMS to detect and forestall such contamination is discussed.
Thekaekara, M. P.↗
Quadrupole ion pump performance characteristics.
A new nonmagnetic ion pump is described that resembles a quadrupole ionization gauge. The dimensions are larger, and hyperbolically shaped electrodes replace the four rods. Pumping speeds (4-100 liters per sec) for different gases at various peak voltages (1000-3000 V) at corresponding frequencies (57-100 MHz) and at different pressures (10 microtorr to 1 nanotorr) are reported.
Schwarz, H.↗
Ion masking improves resolution in quadrupole mass spectrometers
Mass spectrometers analyze molecular composition by determining mass-to-charge ratio of ion fragments of molecules. Study adds significantly to quantitative understanding of quadrupole mass filter. It includes development of quantitative theory of ion oscillations, computer analysis of ion behavior, and identification of determining factors in peak tail size.
Ierokomos, N.↗