The electron beam quality determines the main synchrotron radiation characteristics therefore beam diagnostics is of great importance for synchrotron radiation source performance. The real-time processing of the electron beam parameters is a necessary procedure to optimize the key characteristics of the source using feedback loops. The frequency of electron beam cycling in the synchrotron stora...

Statistical modeling of the avalanche photodiode electron output is discussed. The exact McIntyre–Conradi density function for the output electron count is reviewed, along with the Webb and Gaussian approximations. In addition, the maximum-likelihood decision statistic for detection of pulse-position-modulation (PPM) signals is derived using the more accurate Webb density rather than the Poisso...

The electron-ion recombination coefficient 7 and the avalanche coefficient S = (or -a) ud, where (L and a are the ionization and attachment coefficients respectively and Vd the drift velocity of the electrons, have been experimentally determined in a self-sustained COz-laser system (1: 1:3 mixture) as a function of the E/N value. For low voltages we found the expected decrease of the recombinat...

Abstract Breakdown voltage (BV) is arguably one of the most critical parameters for power devices. While avalanche breakdown prevailing in silicon and carbide devices, it lacking many wide bandgap (WBG) ultra-wide (UWBG) such as gallium nitride high electron mobility transistor existing UWBG due to deployment junction-less device structures or inherent material challenges forming p-n junctions....

in this study, a general theoretical model to foresee and calculate the current-voltagecharacteristics in a plateau zone and the associated efficiency of the neutron detector (sensitivity) is presented. this study is to complete the previous studies in this field. the model also considers electric field distortion resulting from the charge collection effect. the characteristics curve is obtaine...

Laser-based remote sensing is undergoing a remarkable advance due to novel technologies developed at MIT Lincoln Laboratory. We have conducted recent experiments that have demonstrated the utility of detecting and imaging low-density aerosol clouds. The Mobile Active Imaging LIDAR (MAIL) system uses a Lincoln Laboratory-developed microchip laser to transmit short pulses at 14-16 kHz Pulse Repet...

Electric flashover on power system apparatus and safety equipment can result in destruction to equipment and injury to workers, as well as pose a danger to anyone in the vicinity of this occurring. This phenomenon still continues to be an issue today despite over 100 years of research into the problem. It was determined that an exhaustive literature review should be performed to investigate mat...

The ultrashort pulsed (USP) laser induced plasmamediated ablation in transparent media is modeled and studied in this work. We propose that a certain number of free electrons are required to trigger the avalanche ionization for the first time. Based on this assumption, the ablation process is postulated as two separate processes – the multiphoton and avalanche ionizations. For USP laser induced...