Induced Charge Fluctuations in Semiconductor Detectors with a Cylindrical Geometry

Charge transport in arrays of semiconductor gamma-ray detectors.

We analyze the effects of electrode size on performance of arrays of semiconductor gamma-ray detectors, especially when there is significant charge trapping. With large electrodes, motions of holes and electrons are of equal importance, but when the positive electrode is segmented into an array of small elements the contributions of holes to the output, and hence the effects of hole trapping, a...

Numerical study of convection induced by evaporation in cylindrical geometry

Numerical simulations of convection induced by solvent evaporation during the drying of a polymer solution are considered. This paper focuses on the transient thermal regime occurring at the beginning of the drying and transient solutal effects are not taken into account. The onset of convection (BénardMarangoni and Rayleigh-Bénard) is studied for a large range of initial thicknesses and viscos...

Semiconductor Detectors in Radiation Medicine:

Semiconductor radiation detectors play an important role in radiation instrumentation. They have many advantages due to their small size, outstanding energy resolution in nuclear spectroscopy, easy pixilation for high spatial resolution and ability of integration with readout electronics. Advancement in microelectronic industry made silicon one of the most popular material for radiation detecto...

Semiconductor Detectors - an Introduction

Charge Interactions in Cylindrical Polyelectrolytes

The Debye-Huckel equation is solved for the electrostatic interaction of point charges on the surface of a dielectric cylinder immersed in salt water. Numerical results are given for the potential as a function of axial separation for charges on the same side and on opposite sides of the cylinder, and for two values of the Debye screening length: infinity and unity, in units of the cylinder rad...