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Articles 271 - 283 of 283

Full-Text Articles in Physics

Hall-Coefficient And Resistivity At High Pressure In 1t-Tas2, Paul D. Hambourger, F. J. Disalvo Jan 1980

Hall-Coefficient And Resistivity At High Pressure In 1t-Tas2, Paul D. Hambourger, F. J. Disalvo

Physics Faculty Publications

No abstract provided.

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Physical Consequences Of Anomalies In Nonlocal Potential Problems, L. L. Foldy, James A. Lock Aug 1979

Physical Consequences Of Anomalies In Nonlocal Potential Problems, L. L. Foldy, James A. Lock

Physics Faculty Publications

An s-wave two-body separable potential may give rise to several phenomena which are absent for nonsingular local potentials. We examine the physical implications of a well known example of such phenomena, the continuum bound state, as well as of two lesser known anomalies, the so-called positive energy spurious state and negative energy bound states with improper long-range behavior. By examining these anomalies in light of Levinson's theorem, Wigner's phase shift inequality, and the effect of a perturbation on the anomalous states by their insertion in a three-body scattering situation, we find in agreement with previous studies that the continuum bound …

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Electron Transport In Se-Doped Lt-Tas2, Paul D. Hambourger, F. J. Disalvo Jan 1979

Electron Transport In Se-Doped Lt-Tas2, Paul D. Hambourger, F. J. Disalvo

Physics Faculty Publications

No abstract provided.

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Role Of Low-Energy Two-Body Virtual States In Three-Particle Scattering Situations, James A. Lock Dec 1978

Role Of Low-Energy Two-Body Virtual States In Three-Particle Scattering Situations, James A. Lock

Physics Faculty Publications

A model three-particle scattering situation consisting of a projectile incident on a target bound to a residual core was considered under the assumptions that there was a low-energy virtual state in the projectile-target channel, that the projectile and core did not interact, and that the projectile-target and target-core interactions were s-wave separable interactions. When the appropriate Faddeev equations were solved by inversion, an enhancement was found in the three-body elastic cross section for virtual state energies less than or comparable to the target-core binding energy. This enhancement was determined to be kinematical in origin.

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Magnetoresistance Of 1t-Tase2, Paul D. Hambourger, F. J. Disalvo Jan 1978

Magnetoresistance Of 1t-Tase2, Paul D. Hambourger, F. J. Disalvo

Physics Faculty Publications

No abstract provided.

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Fermi-Surface Topology Of 2h-Tase2 At 4.2k, Paul D. Hambourger Feb 1977

Fermi-Surface Topology Of 2h-Tase2 At 4.2k, Paul D. Hambourger

Physics Faculty Publications

The magnetoresistance of single-crystal 2H-TaSe2 in the commensurate charge-density-wave state has been measured at 4.2 K in magnetic fields up to 48 kG. The results indicate that the Fermi surface supports open orbits parallel to the [0001] direction for all orientations of magnetic field in the (0001) plane. No evidence of open orbits in other directions was observed.

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Search For Volume Anomaly In Paramagnetic Zrzn2, Paul D. Hambourger Jan 1977

Search For Volume Anomaly In Paramagnetic Zrzn2, Paul D. Hambourger

Physics Faculty Publications

No abstract provided.

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Multiple Rainbows From Single Drops Of Water And Other Liquids, Jearl D. Walker May 1976

Multiple Rainbows From Single Drops Of Water And Other Liquids, Jearl D. Walker

Physics Faculty Publications

The scattering of light by spherical drops and the theory of rainbows are reviewed in detail to predict the angular positions of rainbows from single drops. The angular positions of the first 13 rainbows of water, observed from a drop suspended in a student spectrometer, were compared to these theoretical positions. Since the rainbows were dependent on the refractive index, the positions shifted with drops of other fluids having other refractive indices. Light corn syrup yielded 11 rainbows, including the 17th-order one. The light emerging from the drops was white except for the multicolors of the rainbows and the faint …

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Electron-Phonon Interaction In Impure Cadmium, Paul D. Hambourger Jan 1976

Electron-Phonon Interaction In Impure Cadmium, Paul D. Hambourger

Physics Faculty Publications

No abstract provided.

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Karate Strikes, Jearl D. Walker Oct 1975

Karate Strikes, Jearl D. Walker

Physics Faculty Publications

Analysis of a forward karate punch is made as an example of collision mechanics. The energy lost to deformation of an opponent is evaluated, and the deformation is shown to be maximized if contact is made when the fist has the greatest speed. In karate fighting the maximum deformation is obtained by focusing a punch to terminate several centimeters inside an opponent’s body. The average impact force is calculated and compared with that neeeded to break a human bone by stressing it beyond its ultimate bending stress value. Similar breaking forces needed for bricks and wooden boards are also computed. …

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Double Rainbow And Dark Band In Searchlight Beam, J. Harsch, Jearl D. Walker May 1975

Double Rainbow And Dark Band In Searchlight Beam, J. Harsch, Jearl D. Walker

Physics Faculty Publications

No abstract provided.

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Temperature Dependence Of Magnetoresistance In Ni3al System, Paul D. Hambourger, R. J. Olwert, C. W. Chu May 1975

Temperature Dependence Of Magnetoresistance In Ni3al System, Paul D. Hambourger, R. J. Olwert, C. W. Chu

Physics Faculty Publications

The transverse magnetoresistance of stoichiometric and off-stoichiometric polycrystalline samples of the Ni3Al system has been measured over the temperature range 1.2C. The data are in qualitative agreement with the theoretical predictions of Chang et al. based on a model of the magnetoresistance of an itinerant ferromagnet, but the observed magnetoresistance is considerably larger than predicted.

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Temperature-Dependence Of Electron Mean Free Paths In Tungsten, Paul D. Hambourger Jan 1975

Temperature-Dependence Of Electron Mean Free Paths In Tungsten, Paul D. Hambourger

Physics Faculty Publications

No abstract provided.

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