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Physics

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Articles 1831 - 1860 of 1948

Full-Text Articles in Entire DC Network

Electron-Impact Induced Fine-Structure Transitions In Atomic Oxygen., Balkrishna Ramchandra Tambe Jan 1974

Electron-Impact Induced Fine-Structure Transitions In Atomic Oxygen., Balkrishna Ramchandra Tambe

LSU Historical Dissertations and Theses

Calculations of cross-sections for the excitation of 3 fine structure levels of the ground P state of atomic oxygen by electron-impact in the energy range 500-15000°K are made in the close-coupling approximation. It is shown that above 3000°K, the exact-resonance approximation can be used to obtain quite reliable results. In this range polarization effects can be incorporated by use of pseudostates. The convergence of the close-coupling expansion has been tested by adding more terms belonging to the same configuration as well as pseudo-states. The effect of using a multi-configuration wave function was examined. Results are presented for a two-configuration wave …


A Field-Theoretic Approach To Elementary Excitations In Superfluid Liquid Helium., Gary Stephen Grest Jan 1974

A Field-Theoretic Approach To Elementary Excitations In Superfluid Liquid Helium., Gary Stephen Grest

LSU Historical Dissertations and Theses

No abstract provided.


Frame Transformations In Electron-Molecule Scattering., Charles Albert Weatherford Jan 1974

Frame Transformations In Electron-Molecule Scattering., Charles Albert Weatherford

LSU Historical Dissertations and Theses

The noniterative integral equation technique is used to solve the linear, ordinary, second-order coupled differential equations that result from a treatment of the electron-molecule scattering problem within the close­ coupling theory. In order to compensate for truncation of the close-coupling system wavefunction expansion, alterna­tive coordinate reference frames (lab and body) are used to describe the incident electron trajectory. The trans­formation between the two frames, within the framework of the integral equation quadrature, 1s described and then applied to the scattering problem to calculate pure rotational cross sections, o(6v=O, 6j=2), pure vibra­tional cross sections, o(v=O l, 6j=O) and simultaneous rotational-vibrational cross …


Magnetic-Field And Screening Effects In Condensed And Ultradense Matter., Keith Miles Roussel Jan 1974

Magnetic-Field And Screening Effects In Condensed And Ultradense Matter., Keith Miles Roussel

LSU Historical Dissertations and Theses

Please download material to view abstract.


Auroral Infrasonic Waves And The Polar Magnetic Substorm, Roland Everett Johnson Apr 1973

Auroral Infrasonic Waves And The Polar Magnetic Substorm, Roland Everett Johnson

Theses (Unassigned)

No abstract provided.


Some Relationships Between Glaciers And Climate In Alaska, Charles Byron Fahl Apr 1973

Some Relationships Between Glaciers And Climate In Alaska, Charles Byron Fahl

Theses (Unassigned)

No abstract provided.


Observation Of A Second-Order Phase Transition And Its Associated P - T Phase Diagram In Liquid He3, Richard A. Webb, T. J. Greytak, R. T. Johnson, J. C. Wheatley Feb 1973

Observation Of A Second-Order Phase Transition And Its Associated P - T Phase Diagram In Liquid He3, Richard A. Webb, T. J. Greytak, R. T. Johnson, J. C. Wheatley

Faculty Publications

A specific-heat "discontinuity" is observed in liquid He3 from 241 lb/in.2 to the melting pressure in the temperature range 2-3 mK.


A Data Unfolding Technique As Applied To Ultrasoft X-Ray Detectors Utilized In A Sounding Rocket Experiment, John Thomas Apostolos Jan 1973

A Data Unfolding Technique As Applied To Ultrasoft X-Ray Detectors Utilized In A Sounding Rocket Experiment, John Thomas Apostolos

Doctoral Dissertations

No abstract provided.


The Flux And Energy Spectrum Of Fast-Neutrons And Gamma-Rays At Balloon Altitudes, David Michael Klumpar Jan 1973

The Flux And Energy Spectrum Of Fast-Neutrons And Gamma-Rays At Balloon Altitudes, David Michael Klumpar

Doctoral Dissertations

No abstract provided.


Noniterative Integral-Equation Approach To Scattering Problems., Ed Ray Smith Jan 1973

Noniterative Integral-Equation Approach To Scattering Problems., Ed Ray Smith

LSU Historical Dissertations and Theses

No abstract provided.


Magnetic And Thermometric Properties Of Na3[Ce(C7h3no4)3] ·15h2o In The Millikelvin Range, Richard A. Webb, J. C. Wheatley Oct 1972

Magnetic And Thermometric Properties Of Na3[Ce(C7h3no4)3] ·15h2o In The Millikelvin Range, Richard A. Webb, J. C. Wheatley

Faculty Publications

Measurements of the 16-Hz susceptibility of a powdered Na3[Ce(C7H3NO4)3] · 15H2O (CDP) sample, in the shape of a right-circular cylinder with diameter equal to height, have been made as a function of the Johnson noise temperature TJ of a resistor in the range 2 to 20 mK. Pure liquid 3He was used for thermal contact between the CDP and the noise thermometer in a demagnetization cell. The results are compared with similar data for cerium magnesium nitrate (CMN). CDP appears, like CMN, to have an anomalously …


Electromagnetic Cavity Resonances In Rotating Systems, Barbaros Celikkol Jan 1972

Electromagnetic Cavity Resonances In Rotating Systems, Barbaros Celikkol

Doctoral Dissertations

No abstract provided.


Self-Consistent Calculation Of Energy Bands In Ferromagnetic Iron., Riad Alfred Tawil Jan 1972

Self-Consistent Calculation Of Energy Bands In Ferromagnetic Iron., Riad Alfred Tawil

LSU Historical Dissertations and Theses

No abstract provided.


Oscillating Cylinders And The Stokes Paradox., Robert Edgar Williams Jan 1972

Oscillating Cylinders And The Stokes Paradox., Robert Edgar Williams

LSU Historical Dissertations and Theses

No abstract provided.


Community And School Involvement In Model Rocketry Instruction Including Suggestions For Efficient Model Rocket Construction, Helen Joyce Frizzell Jan 1972

Community And School Involvement In Model Rocketry Instruction Including Suggestions For Efficient Model Rocket Construction, Helen Joyce Frizzell

All Master's Theses

This paper presents the pilot-study of conducting model rocketry classes for parents and youth leaders as well as students and teachers to broaden involvement in aerospace education. Ideas gleaned from questionnaires, surveys, observations, and the review of literature were used to compile A Handbook of Tins for the Efficient Construction and Use of Model Rockets.

A slide presentation illustrating school and community involvement in model rocketry was also developed.

Recommendations included more model rocketry classes involving students and adults be offered and suggested that an appropriate organization publish and distribute the handbook and slide presentation.


A Kinetic Analysis Of The Iodination Of Pyruvic Acid And Pyruvate Esters, Mohamed M. Fahmi Hegazi Aug 1971

A Kinetic Analysis Of The Iodination Of Pyruvic Acid And Pyruvate Esters, Mohamed M. Fahmi Hegazi

All Master's Theses

In the present work the relative rates of iodination of pyruvic acid and ethyl and methyl pyruvate have been compared at 25.0° C. These studies allow the determination of the respective free energies of activation for these processes. Measurements have also been carried out at various temperatures to determine the enthalpies and entropies of activation for the spontaneous and base catalysed iodinations of these pyruvate systems. The present thesis also includes a comparison of the solvent deuterium isotope effects associated with the spontaneous rate of iodination of pyruvic acid and the alkyl pyruvates. Also, the catalytic rate coefficients associated with …


Summer Session - The School Year 1971, Prairie View A&M College Jul 1971

Summer Session - The School Year 1971, Prairie View A&M College

Annual Catalog

No abstract provided.


A Variational Calculation Of The Polaron Self-Energy And Effective Mass., Benjamin Uris Stewart Jan 1971

A Variational Calculation Of The Polaron Self-Energy And Effective Mass., Benjamin Uris Stewart

LSU Historical Dissertations and Theses

No abstract provided.


Particle Parameter And Internal Conversion Coefficient Measurements On Gadolinium-154., Whitney J. Blanchard Jr Jan 1971

Particle Parameter And Internal Conversion Coefficient Measurements On Gadolinium-154., Whitney J. Blanchard Jr

LSU Historical Dissertations and Theses

No abstract provided.


The Calculation Of Vander Waals' Constant By The Extended Hartree-Fock Wave Function, Jwe-Son Kuo Jan 1971

The Calculation Of Vander Waals' Constant By The Extended Hartree-Fock Wave Function, Jwe-Son Kuo

Doctoral Dissertations

No abstract provided.


Rocket Measurements Of Field Aligned Currents And Energy Spectra Of Charged Particles In An Auroral Display, Lawrence Wah Choy Jan 1971

Rocket Measurements Of Field Aligned Currents And Energy Spectra Of Charged Particles In An Auroral Display, Lawrence Wah Choy

Doctoral Dissertations

No abstract provided.


Spin Wave Spectrum And Magnon Contribution To The Specific Heat Of Europium Telluride And Europium Selenide., Frederick Charles Masset Jr Jan 1971

Spin Wave Spectrum And Magnon Contribution To The Specific Heat Of Europium Telluride And Europium Selenide., Frederick Charles Masset Jr

LSU Historical Dissertations and Theses

No abstract provided.


Self-Consistent Energy Bands Of Lithium Fluoride., Donald Maurice Drost Jan 1971

Self-Consistent Energy Bands Of Lithium Fluoride., Donald Maurice Drost

LSU Historical Dissertations and Theses

No abstract provided.


Radiative Cooling Rates In The Presence Of Ice Crystal Aerosols, Sue Ann Bowling Apr 1970

Radiative Cooling Rates In The Presence Of Ice Crystal Aerosols, Sue Ann Bowling

Theses (Unassigned)

No abstract provided.


The Low-Lying States Of A System Of Polarons In The Landau-Pekar Adiabatic Approximation., James Lloyd Edwards Jan 1970

The Low-Lying States Of A System Of Polarons In The Landau-Pekar Adiabatic Approximation., James Lloyd Edwards

LSU Historical Dissertations and Theses

No abstract provided.


Energy Bands Of Vanadium Oxide., Thomas Ellis Norwood Iii Jan 1970

Energy Bands Of Vanadium Oxide., Thomas Ellis Norwood Iii

LSU Historical Dissertations and Theses

No abstract provided.


Test Of The Polarized Orbital Method., Ranjit Singh Oberoi Jan 1970

Test Of The Polarized Orbital Method., Ranjit Singh Oberoi

LSU Historical Dissertations and Theses

No abstract provided.


Study Of Ellipsoidal Symmetry Relations In Heavily Doped N-Germanium, Dwight Morton Harris Jan 1970

Study Of Ellipsoidal Symmetry Relations In Heavily Doped N-Germanium, Dwight Morton Harris

Doctoral Dissertations

No abstract provided.


A Second Order Correction To Feynman's Path Integral Calculation Of The Polaron Self-Energy., Laney Ray Mills Jan 1970

A Second Order Correction To Feynman's Path Integral Calculation Of The Polaron Self-Energy., Laney Ray Mills

LSU Historical Dissertations and Theses

No abstract provided.


Gravity Survey In The General Area Of The Katmai National Monument, Alaska, Juergen Kienle Apr 1969

Gravity Survey In The General Area Of The Katmai National Monument, Alaska, Juergen Kienle

Theses (Unassigned)

No abstract provided.