Study on particle generation model of anode in rod-pinch diode

<sec>Flash radiography technology is commonly used in detonation physics experiments and nondestructive testing, which an X-ray diode integral part of flash equipment. Its function to convert the electric energy stored front power supply into X-rays through bremsstrahlung effect. Rod-pinch one most diodes 1–4 MV. It has characteristics a small focal spot high imaging resolution. The anode ions rod pinch come from plasma, plasma electrons are generated at same time as ions. Before establishment bipolar current between cathode diode, these mainly absorbed by anode; however, after formation current, due zero field on surface, will accumulate near surface not be absorbed. Given theoretical derivation gap early stage, it necessary study plasma.</sec><sec>The simulation rod-pinch essential tool for improving performance diode. To improve accuracy, emission mechanism particles continuously optimize model. In this paper, PIC Monte Carlo used. An model proposed work based ion space charge flow, that is, when environment fully established, zero, surface. new analyzed detail compared with electromagnetic distribution anode, electron spectrum, motion state incident rod, dose, size. results show calculation closer experimental results, shows role accumulated cannot ignored numerical plasma.</sec>