Absence of Debye sheaths due to secondary electron emission.

Instability, Collapse and Oscillation of Sheaths Caused by Secondary Electron Emission

Controlling Sheath and Plasma Properties due to Effects of Electron-Induced Secondary Electron Emission

Plasma-surface interactions in the presence of strong secondary electron emission (SEE) have been theoretically studied in the context of numerous plasma applications such as diverters, surface discharges, dusty plasmas, plasma thrusters, and plasma processing. The electron flux to the wall is determined by the electron velocity distribution function (EVDF) and by the sheath potential, which ar...

Numerical Simulation of Probe Measurements in a Non- equilibrium Plasma, Using a Detailed Model Electron Fluid

This study investigates the axisymmetric plasma flow field near a Faraday probe. A hybrid fluid PIC computational code simulates heavy particles with a Particle In Cell (PIC) model, and electrons with a detailed model derived from conservation of mass, momentum, and energy. These simulations show significant departures from the planar Bohm sheath solution and from previous simulations using the...

بررسی تابش کانالی از ‌بلور‌های الماس به منظور تهیه پرتو X تک انرژی درشتاب دهنده خطی الکترون ELBE

The measurements of electron Channeling Radiation (CR) have been performed at ELBE linear electron accelerator of the Forschungszentrum Dresden-Rossendorf. The aim of performing these experiments was to optimize radiation yield and spectral line width of CR in order to apply channeling radiation for preparing a monochromatic X-ray source. Diamond crystals can be used in relatively high electron...

Estimation of Secondary Skin Cancer Risk Due To Electron Contamination in 18-MV LINAC-Based Prostate Radiotherapy

Introduction Accurate estimation of the skin-absorbed dose in external radiation therapy is essential to estimating the probability of secondary carcinogenesis induction Materials and Methods Electron contamination in prostate radiotherapy was investigated using the Monte Carlo (MC) code calculation. In addition, field size dependence of the skin dose was assessed. Excess cancer risk induced by...