LIF spectroscopy of OH radicals in a micro-flow DC discharge in Ar and He with a liquid electrodeA. Nikiforov, L. Li, Q. Xiong, C. Leys and X.P. LuEur. Phys. J. Appl. Phys., 56 2 (2011) 24009DOI: https://doi.org/10.1051/epjap/2011110165