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COINCIDENCE DETECTION OF PROTONS AND METASTABLE HYDROGEN ATOMS FROM DISSOCIATIVE IONIZATION OF MOLECULAR HYDROGEN BY ELECTRON IMPACT (TIME-OF-FLIGHT).CHO, HYUCK. January 1985 (has links)
A coincidence has been observed between H(2S) and H⁺ fragments resulting from the bombardment of H₂ with 100 eV electrons. A significant source of this coincidence is believed to be the 2sσ(g) state of H₂⁺. The time-of-flight (TOF) distribution of H(2S) fragments from the 2sσ(g) state was measured and converted to the kinetic energy distribution from which the potential energy of the 2sσ(g) state in the Franck-Condon region was constructed. The result is in good agreement with a published calculation.
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The Recombination Rate Coefficient of Molecular Helium Ions in a Pulsed Afterglow at 1.86 TorrHicks, Helen Segrave 08 1900 (has links)
The recombination rate coefficient for molecular helium ions has been measured in a pulsed afterglow at 1.86 Torr as a function of electron temperature and electron density without making a priori assumptions about the functional dependence. The concentrations of the molecular ions and electrons were measured and the source terms for the molecular ions were included in the rate equation.
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Gas phase x-ray photoelectron spectroscopy of some ketone compoundsSitumeang, Rudy T. M. 03 August 1994 (has links)
The photoelectron spectra of a series of ketone
compounds have been investigated in the gas phase. Core
ionization energies were measured to probe the effects of
molecular size and connectivity number on core ionization
energies.
It was found that core ionization energies roughly
decrease with increasing connectivity number as expected.
However, subdividing into several categories based on the
molecular type gives improved correlations.
These results show both the effect of molecular size
and that of bringing the polarizable group closer to the
core ionized center.
In some cases, compounds with the same connectivity
number have different core ionization energies and, in
others, compounds with different connectivity number have
the same core ionization energies. These discrepancies
indicate that the simple method for calculating connectivity
numbers must be modified to reflect different molecular
types. Other discrepancies indicate that this method does
not correctly predict the effects of remote hydrogens or the
effects of aromatic substituents, where conjugation may
influence the relaxation energy. / Graduation date: 1995
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AN ION TIME-OF-FLIGHT SPECTROMETER WITH MASS ANALYSISBurrows, Michael Daniel January 1979 (has links)
No description available.
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ABSOLUTE RADIOMETRIC CALIBRATION OF A SPECTROPOLARIMETER.CASTLE, KENNETH ROBERT. January 1985 (has links)
Two identical instruments have been developed for use in the field to make radiometric measurements. They have been described as spectropolarimeters because of their ability to make polarization measurements in narrow spectral passbands. They have been used as part of a NASA sponsored project to monitor the spectral and temporal response of the thematic mapper satellites. These satellites allow many natural and man-tended resources to be monitored over years of time, thus allowing their use to be planned for in the future. The dissertation discusses the design, fabrication, testing and absolute radiometric calibration of these spectropolarimeter instruments. The outstanding feature of these instruments are that they have been calibrated absolutely, for radiance measurements, to an accuracy of 2% - 3%, in the range of 400 nm to 1040 nm over selected spectral passbands. Previously, field measurements were considered good if they had an absolute accuracy of 10%, implying that the present accuracies are advancing the state-of-the-art for field instrument calibrations. These improved accuracies are the result of using two recently developed calibration standards, both of which use detector based methods. These standards are the Electrically Calibrated Pyroelectric Radiometer (ECPR), and the QED-100 quad detector. The end of the dissertation discusses the attempts made to verify that the accuracies claimed are indeed valid, and it is the author's belief that these accuracies have been verified completely.
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Thermionic ions generated in nitrogen and carbon dioxideShaver, Frederick William, 1933- January 1956 (has links)
No description available.
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Structural and mechanistic studies by modern mass spectrometryCarlson, Richard Earl 05 1900 (has links)
No description available.
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The measurement and application of transport properties of ion swarms in gasesHolleman, Franklin Benton 12 1900 (has links)
No description available.
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On the motion of a sphere of oil through carbon dioxide and an exact determination of the coefficient of viscosity of that gas by the oil dorp [i.e. drop] method ...Lassalle, Leo Joseph. January 1900 (has links)
Thesis (Ph. D.)--University of Chicago, 1917. / "Reprinted from the Physical review, N.S., Vol. XVII, No. 3, March, 1921." Includes bibliographical references.
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The conductivity produced in neon and in helium by irradiation with their own resonance radiations and the effect of foreign gases on this conductivitySmith, Robert Worth, January 1900 (has links)
Thesis (Ph. D.)--University of Michigan, 1933. / Cover title. Reprinted from the Physical review, vol. 47, no. 6, March 15, 1935."
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