Advanced diagnostic measurements of low and atmospheric pressure plasmas

The major focus was on improving industrial process monitoring (low-pressure) and helping to develop further understanding for electrical probes on plasma jets (atmospheric-pressure).<br><br>For low-pressure plasmas, the study investigates the use of a V/I probe (Octiv) as a non-invasive tool and its ability to stand alongside in-situ measurement tools such as a Retarding field energy analyser (Semion) and Langmuir probe.

Models were developed to extract plasma parameters such as ion flux (Jp), ion energy (Ei) and plasma density (n) from external means and benchmarked alongside internal probe data and also various models for low-pressure plasmas.<br><br>For atmospheric-pressure plasmas, a kHz-driven dielectric barrier discharge (DBD) plasma jet was characterized using a Langmuir probe to develop accessible diagnostic methods suitable for research settings.