TEMPORAL EVLOUTION OF THE STARK-BROADENING OF H_β LINE IN LASER-INDUCED PLASMA IN METHANE

The temporal evolution of stark-broadening of H_β line in laser-induced plasma in methane is investigated and the electronic density is determined from the Stark-broadened linewidth of the Balmer beta line. The maximum half-width of the line is more than 100Å and the deduced electronic density is about 4x10¹⁷cm^-3.