Photoelectroluminescence, which involves the control of electroluminescence by electromagnetic radiation, is reported for single crystals of manganese-activated zinc sulfide. Both plane-parallel and point-contact electrode structures were used. The latter resulted in greater homogeneity of luminescent emission with the applied voltage mainly across...
The phenomenon of radial beam break-up observed in terms of long, multi-section electron linear accelerators has been analyzed using a multi-cavity model. In this model the source of regeneration due to backward wave amplification is ignored. The dominant phenomenon involves build-up of radial modes in each cavity as coupled by the electron beam. T...
It is found experimentally that s-d superconductors have anomalous curvatures in the temperature dependence of the normal state resistivity. © 1973.
We find that a certain feature of the normal state resistivity correlates with Tc in a closely related group of superconductors. © 1974.
The contribution to the electrical resistivity of NdB6 arising from temperature dependent crystal field level populations is experimentally measured and accounted for by theory. © 1976.
Experimental evidence about the temperature dependence of phonon frequencies in V3Si is used to demonstrate that anharmonicity is a major factor in causing the resistance anomalies recently observed in many high-Tc superconductors. © 1976.
Measurement of thermionic electron emission values for pointed LaB 6 single-crystal emitter cathodes has shown that 〈110〉 axial orientations yield emission values ten times higher than 〈100〉 orientations at 1545°K. Minimum values were obtained for the 〈510〉 directions. These findings seem encouraging in achieving perhaps two orders of magnitude hig...
The electrical resistivity of PrB6 contains a term arising from the temperature dependent crystal field level populations by 4f electrons which our measurements indicate is equally made up of aspherical Coulomb and exchange scattering of conduction electrons. © 1977.
The radiative energy loss from an argon plasma in a shock tube has been investigated, with emphasis on the role of reabsorption. Electron densities reached values of 1.5*1024 electrons m-3 behind the primary shock, and 2.5*1025 electrons m-3 after shock reflection. For the primary shock, emissivity effects outweighed reabsorption, whereas the axial...
