Optogalvanic transients in a neon discharge plasma

Time dependent optogalvanic signals induced by the 1s$_{4}$-2p$_{n}$ laser excitations have been studied in the neon DC plasma. The decay rates related to all the four 1s levels have been derived by fitting the waveforms with a mathematical rate equation model. The temporal signatures of the two transitions namely 638 nm and 650 nm related to the 2p$_{7}$ and 2p$_{8}$ upper levels, respectively, have been found different from the rest of the transitions.