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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

Multiple valency in the ionization by alpha rays

Wilkins, Thomas Russell. January 1921 (has links)
Thesis (Ph. D.)--University of Chicago, 1921.

The effect of temperature on the ionization of a gas ...

Clo, J. Harry. January 1911 (has links)
Thesis (Ph. D.)--University of Chicago.

The Nature of the process of ionization of gases by alpha rays ... /

Gottschalk, Victor Hugo, Millikan, Robert Andrews, Kelly, Mervin Joe. January 1900 (has links)
Thesis (Ph. D.)--University of Chicago, 1917. / "Work in collaboration with Professor R.A. Millikan and Mr. M.J. Kelly." "Private edition, distributed by the University of Chicago libraries, Chicago, Illinois." "Reprinted from Physical review, n.s., volume xv, no. 3, March, 1920."

An analogue computer study of the Townsend and linear Z-pinch gas discharges

Gallaher, Donald Frederick McGeer January 1963 (has links)
This thesis describes a study of gas discharges employing analogue computing techniques. Two discharges are examined: The extensively documented Townsend discharge and the recently investigated linear z-pinch discharge of plasma physics. The Townsend discharge theory is presented, with theoretical and experimental results given for the gas ionization coefficients ∝, ɤ and the attachment coefficient ƞ. Simulation of the general Townsend equation including ∝, ɤ and ƞ is described and an error analysis is given. Computer ionization curves are generated from experimental values of ∝, ɤ and ƞ in three common gases and compared with corresponding experimental ionization curves. Townsend’s empirical equation for ∝is used to extend ionization curves to relatively large values of E/p. Theoretical formulae are presented for the primary ionization coefficient in neon-argon gas mixtures. The z-pinch discharge in the case of infinite plasma conductivity is discussed and the snowplow equation for the time variation of the plasma tube radius is derived. An analogue simulator for the snowplow equation is presented and an error analysis given. Analogue computer radial collapse curves are generated for argon and nitrogen and comparisons are made between analogue, digital computer and experimental collapse curves. It is concluded that the analogue computer is well suited to the solution of problems involving the Townsend and z-pinch discharges. The possibility of treating magnetohydrodynamic power generation by analogue methods is mentioned. / Science, Faculty of / Physics and Astronomy, Department of / Graduate

The construction of a low-pressure flash tube and the measurement of some of its properites

Robinson, Alexander Maguire January 1962 (has links)
A low pressure coaxial flash tube of simple design has been constructed which does not suffer from deposition on the exit window. Some of the electrical and spectroscopic characteristics of the tube have been measured. A method of measuring the brightness temperature over the visible range was used by comparing photoelectrically the intensity of the tube with that of a black body. The temperature was found to be lower than expected. / Science, Faculty of / Physics and Astronomy, Department of / Graduate

Calculation of the energy relaxation times of a two component plasma

Jankulak, Francis Joseph January 1963 (has links)
Employing variational procedures on the transport equation we calculate, in this thesis, three relaxation times of a typical shock tube plasma. They are the electron-electron, ion-ion, and electron-ion relaxational times. The results are compared to those obtained by other authors, and are essentially an improvement on the work done by Phillips. / Science, Faculty of / Physics and Astronomy, Department of / Graduate

Production of a highly-ionized gas by an electromagnetically-driven shock wave

Cormack, George Douglas January 1960 (has links)
A study has been made of the properties of an electromagnetically generated shock wave travelling through both argon and helium. An initial capacitive energy of 450 joules has been rapidly discharged into the gas and has resulted in shock wave velocities of up to five centimeters per microsecond. The high velocities obtained can be attributed to careful design of the main discharge circuit. Preliminary results of measurements of the properties of the shock wave are given. Of primary interest has been the results of measurements of the properties of the plasma associated with the shock wave. A magnetic field deflection method has been developed for the measurement of the electrical conductivity of this plasma. / Science, Faculty of / Physics and Astronomy, Department of / Graduate

Simultaneous ionization and excitation of diatomic molecules by impacts with positive ions and excited atoms

Smith, Harry La Verne, January 1900 (has links)
Thesis (Ph. D.)--University of Michigan, 1928. / "Reprinted from Physical review ... vol. 34, no. 1, July 1, 1929."

The mobilities of mass-identified H[subscript]3[superscript]+ and H[superscript]+ ions in hydrogen

Albritton, Daniel Lee 05 1900 (has links)
No description available.

Mobility of positive ions in gases /

Elford, Malcolm Thomas. January 1957 (has links) (PDF)
Thesis (Ph.D)--University of Adelaide, 1957. / "November 1957." Includes bibliographical references.

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