High frequency Transition Radiation from uniaxial crystal

High frequency Transition Radiation from uniaxial crystal

Transition radiation from an ultrarelativistic particle flying out of the crystal surface at an arbitrary angle is considered. The expression for the spectral-angular density of radiation in the high frequencies has been obtained. The dependence of the resulting radiation distribution depending on the directions of the crystal main axis relative to the surface and the angle of the emission part...

Elastic wave radiation from a high frequency finite-length transducer

A simple model of a high frequency piezoelectric transducer affixed to an elastic half-space is analysed. The problem is reformulated as a modified matrix Wiener–Hopf equation, containing a kernel for which there is no known exact factorisation. An approximate factorisation is obtained, and the resulting integral equation is solved by iteration, in limit that the length of the transducer is ver...

Experimental observation of a transition between two uniaxial nematic liquid-crystal phases.

Experimental-Observation of a Transition Between 2 Uniaxial Nematic Liquid-Crystal Phases

Single-Crystal EPR Studies of Transition-Metal Ions in Inorganic Crystals at Very High Frequency

Electron paramagnetic resonance (EPR) single-crystal rotation studies at very high frequency (249.9 GHz) of transition metal ions with electron spins greater than one-half are reported. At 249.9 GHz, the spectra are in the high-field limit despite large zero-field splittings. This leads to a considerable simplification of the spectra, and aids in their interpretation. Single-crystal 249.9 GHz E...