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Full-Text Articles in Physics

Optical Properties Of Antiferromagnetic Chromium And Dilute Cr-Mn And Cr-Re Alloys, Laurence W. Bos, David W. Lynch Dec 1970

Optical Properties Of Antiferromagnetic Chromium And Dilute Cr-Mn And Cr-Re Alloys, Laurence W. Bos, David W. Lynch

Physics and Astronomy Publications

The antiferromagnetic energy gap and optical properties of single crystals of Cr and of Cr alloyed with 0.45, 0.94, 2.5, and 4.5% Mn and with 1.05 and 2.0% Re have been investigated by measuring the optical absorption over a photon energy range of 0.08-5 eV. The data were taken at 4.2 K by a calorimetric technique. It is found that at 4.2 K, approximately 1% Mn or Re will cause commensurate antiferromagnetic ordering, and the energy gap shifts abruptly from 0.13 to 0.36 eV near this concentration of diluent ...


Optical Properties Of The Rubidium And Cesium Halides In The Extreme Ultraviolet, M. Cardona, R. Haensel, David W. Lynch, B. Sonntag Aug 1970

Optical Properties Of The Rubidium And Cesium Halides In The Extreme Ultraviolet, M. Cardona, R. Haensel, David W. Lynch, B. Sonntag

Physics and Astronomy Publications

The absorption spectra of evaporated thin films of all rubidium and cesium halides in the 50- to 250-eV region are reported. In this range, transitions from the 3d shell of Rb+ and from the 4d and 4p shells of Cs+ can be seen, as well as some transitions from inner shells of the halogen ions. Besides the absorption fine structure near the threshold for inner-shell transitions, broad absorption structure is observed and explained as due to d→f continuum transitions. The number of effective electrons whose oscillator strength has been exhausted in our spectral region has been computed from the ...


Low-Energy Optical Absorption Peak In Aluminum And Al-Mg Alloys, L. W. Bos, David W. Lynch Jul 1970

Low-Energy Optical Absorption Peak In Aluminum And Al-Mg Alloys, L. W. Bos, David W. Lynch

Physics and Astronomy Publications

Measurements of the absorptivity of Al and dilute Al-Mg alloys were made at 4.2 K in the 0.2- to 5-eV energy region by a calorimetric technique. In addition to the well-known conductivity peak around 1.6 eV, another peak has been found near 0.5 eV. These peaks are present in the alloys, broadened, but unshifted, as well as in Al. The peaks are at about 2|V200|and 2|V111|, respectively, where the V's are Fourier coefficients of the pseudopotential.


Pressure Shift Of The U Band In Kbr, A. D. Brothers, David W. Lynch, C. G. Olson Feb 1970

Pressure Shift Of The U Band In Kbr, A. D. Brothers, David W. Lynch, C. G. Olson

Physics and Astronomy Publications

The pressure derivative of the U-band peak position in KBr was determined to be +27×10−6 eV bar−1 and +30×10−6eV bar−1 for H− and D− impurities, respectively. These are equal, within the uncertainty of ±3×10−6 eV bar−1 for each coefficient. The shift of the peak of the U band with temperature is shown to arise almost entirely from thermal expansion.


Investigation Of Isobaric Spin Splitting In The Giant Resonance Of Zinc 64 , Frederick Herold Schamber Jan 1970

Investigation Of Isobaric Spin Splitting In The Giant Resonance Of Zinc 64 , Frederick Herold Schamber

Retrospective Theses and Dissertations

No abstract provided.


Exciton Oscillator Strengths In Silver Chloride , Gordon Dennis Lassahn Jan 1970

Exciton Oscillator Strengths In Silver Chloride , Gordon Dennis Lassahn

Retrospective Theses and Dissertations

No abstract provided.


Photofission Of U235 And U238 Using A Compton Scattering Monochromator , James Edison Hall Jan 1970

Photofission Of U235 And U238 Using A Compton Scattering Monochromator , James Edison Hall

Retrospective Theses and Dissertations

No abstract provided.


Electron Energy Loss To Surface Excitations In Thin Films , Jay Benton Chase Jan 1970

Electron Energy Loss To Surface Excitations In Thin Films , Jay Benton Chase

Retrospective Theses and Dissertations

No abstract provided.


Magnetic Form Factor Of Thulium And Terbium Metals , Torben Otto Brun Jan 1970

Magnetic Form Factor Of Thulium And Terbium Metals , Torben Otto Brun

Retrospective Theses and Dissertations

No abstract provided.


Optical Studies Of Cadmium , Roger James Bartlett Jan 1970

Optical Studies Of Cadmium , Roger James Bartlett

Retrospective Theses and Dissertations

No abstract provided.


Gamma Ray Decay Schemes For 142xe, 142cs, 142ba, 142la , Jon Thorsten Larsen Jan 1970

Gamma Ray Decay Schemes For 142xe, 142cs, 142ba, 142la , Jon Thorsten Larsen

Retrospective Theses and Dissertations

No abstract provided.


Antiproton-Proton Annihilation Into Four And Five Pions At 2.4 And 2.9 Gev/C , Ronald Paul Radlinski Jan 1970

Antiproton-Proton Annihilation Into Four And Five Pions At 2.4 And 2.9 Gev/C , Ronald Paul Radlinski

Retrospective Theses and Dissertations

No abstract provided.


Decay Of 73m,G Se, 75m Ge, And 77m,G Ge, Ralph Dennis Meeker Jan 1970

Decay Of 73m,G Se, 75m Ge, And 77m,G Ge, Ralph Dennis Meeker

Retrospective Theses and Dissertations

No abstract provided.


Construction Of A Three Crystal Spectrometer And A Study Of The Decay Of 90nb , S. Oliver Simmons Jan 1970

Construction Of A Three Crystal Spectrometer And A Study Of The Decay Of 90nb , S. Oliver Simmons

Retrospective Theses and Dissertations

No abstract provided.


A Quantum Electrodynamics For Vector Mesons , Robert Henry Tucker Jan 1970

A Quantum Electrodynamics For Vector Mesons , Robert Henry Tucker

Retrospective Theses and Dissertations

No abstract provided.


Measurement Of The Volume Dependence Of The Heat Capacity Of Solid Neon , Robert Quentin Fugate Jan 1970

Measurement Of The Volume Dependence Of The Heat Capacity Of Solid Neon , Robert Quentin Fugate

Retrospective Theses and Dissertations

No abstract provided.


The Radioactive Decay Of 190re And Isomer Ratio Measurements In Photonuclear Reactions , Peter Eugene Haustein Jan 1970

The Radioactive Decay Of 190re And Isomer Ratio Measurements In Photonuclear Reactions , Peter Eugene Haustein

Retrospective Theses and Dissertations

No abstract provided.


Nuclear Magnetic Resonance Hyperfine Fields In The Hexagonal Laves Phase Compounds Scmn2 Ermn2, And Tmmn2 , Barbara Kegerreis Lunde Jan 1970

Nuclear Magnetic Resonance Hyperfine Fields In The Hexagonal Laves Phase Compounds Scmn2 Ermn2, And Tmmn2 , Barbara Kegerreis Lunde

Retrospective Theses and Dissertations

No abstract provided.


Decay Of 95ru And 103tc , Warren Walter Hein Jan 1970

Decay Of 95ru And 103tc , Warren Walter Hein

Retrospective Theses and Dissertations

No abstract provided.


The Radio-Frequency Size Effect And The Fermi Surface Of Molybdenum , Joseph Robert Cleveland Jan 1970

The Radio-Frequency Size Effect And The Fermi Surface Of Molybdenum , Joseph Robert Cleveland

Retrospective Theses and Dissertations

No abstract provided.


Magnetic Thermometry From 1 To 30 K , Thomas Charles Cetas Jan 1970

Magnetic Thermometry From 1 To 30 K , Thomas Charles Cetas

Retrospective Theses and Dissertations

No abstract provided.


Nuclear Magnetic Resonance Determination Of The Activation Volume For Self-Diffusion In Aluminum , Ralph Duane Engardt Jan 1970

Nuclear Magnetic Resonance Determination Of The Activation Volume For Self-Diffusion In Aluminum , Ralph Duane Engardt

Retrospective Theses and Dissertations

No abstract provided.


The Photoneutron Cross Section In The Giant Resonance Region For Several 82 Neutron Isotones , Ronald Gordon Johnson Jan 1970

The Photoneutron Cross Section In The Giant Resonance Region For Several 82 Neutron Isotones , Ronald Gordon Johnson

Retrospective Theses and Dissertations

No abstract provided.


Surface Modes Of Vibration And Optical Properties Of An Ionic Crystal Slab , William Edward Jones Jan 1970

Surface Modes Of Vibration And Optical Properties Of An Ionic Crystal Slab , William Edward Jones

Retrospective Theses and Dissertations

No abstract provided.


Some Applications Of Coherent States In Quantum Electrodynamics , Dennis Leland Nordstrom Jan 1970

Some Applications Of Coherent States In Quantum Electrodynamics , Dennis Leland Nordstrom

Retrospective Theses and Dissertations

No abstract provided.


On The Definition And Observation Of A Signal Velocity For Pulsed Wave Propagation In A Medium With A Resonance Exhibiting Collision And Doppler Broadening , Dennis Benedict Trizna Jan 1970

On The Definition And Observation Of A Signal Velocity For Pulsed Wave Propagation In A Medium With A Resonance Exhibiting Collision And Doppler Broadening , Dennis Benedict Trizna

Retrospective Theses and Dissertations

No abstract provided.


Transport Properties Of Gd-Th, Gd-Mg, And Y-Th Alloys , Donald Williams Mellon Jan 1970

Transport Properties Of Gd-Th, Gd-Mg, And Y-Th Alloys , Donald Williams Mellon

Retrospective Theses and Dissertations

No abstract provided.


Infrared Spectra Of Substitutional H̄ And D̄ Impurities (U-Centers) In Csbr And Csi, Clifford Gerald Olson Jan 1970

Infrared Spectra Of Substitutional H̄ And D̄ Impurities (U-Centers) In Csbr And Csi, Clifford Gerald Olson

Retrospective Theses and Dissertations

No abstract provided.


Lifetimes Of The First Excited States In Tm169, Tm171, And Cs134 , Charles Edward Turner Jr. Jan 1970

Lifetimes Of The First Excited States In Tm169, Tm171, And Cs134 , Charles Edward Turner Jr.

Retrospective Theses and Dissertations

No abstract provided.


Superconductivity And Magnetic Order In La-Ce Alloys , John Jerome Wollan Jan 1970

Superconductivity And Magnetic Order In La-Ce Alloys , John Jerome Wollan

Retrospective Theses and Dissertations

No abstract provided.