Our Journal of Applied Physics paper ” Radar Resonance-Enhanced Multiphoton Ionization for Measurement of Atomic Oxygen in Non-Equilibrium Pulsed Plasmas” was chosen as editor’s choice. Thanks for the great work!
A new measurement technique for non-equilibrium plasmas
A better understanding of non-equilibrium plasma properties is relevant to a variety of aerospace, biomedical and other applications. Currently, there are two common optical techniques for measuring such properties: tunable diode laser spectroscopy (TDLAS) and two-photon absorption laser-induced fluorescence (TALIF). However, optical techniques can be difficult to employ due to the light emitted by the plasma, as well as the physical configurations of existing test facilities.This article reports the development of a spatially-resolved method for measuring neutral species inside non-equilibrium plasmas. The researchers demonstrate the utility of coherent microwave Rayleigh scattering for detection of resonance-enhanced multiphoton ionization — a technique called radar REMPI — to measure atomic oxygen in a pulsed plasma discharge.