Measurement of Excitation Equilibrium Departure Evolition in an Argon Pulsed Plasma

概要

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This xvork reports inforzaaation abotrt the termpor?tl evoltrtion of tlue excitatior'n equilibritttaadepartttre in a higla cttrrent pttlsed arc. Art argon plastaaax has lceen created ira 21 lineaxr larnp bydischarging a capacitor bartk on its electrodes. Spatially ar?d temnporally-resolved uaaeastureraaentshave alloxved [18 to deteruaaine electrora density Y. and excitation teutaperature T with greatacctrracy. Single-xvavelengtla interferotaaetry and H,.-Stark 1.croadening h?tve lveen trsed to raaeasttre7V. (0.2 -O.98xlO"rau '). Bxcitation teraaperattrre hats been obtained frouaa Boltznaann-plot ofArll lines and rarages ira this experirnerat frouaa 13500 to 26500 K. By asstrznixag this teraaperattrreis eqtral to kinetic electron temperattrre and by counjcatrizag the theoretically predicted az'md theexperitauental Arll/Art intezasities ratios at each instant of tlae plasn'xa lif'e, it is possible to I'll(ll'2LSL1I(2tlae departtnre of the excitation processe ['rotaa local tlae?n dynaraaic eqtmilibriutua (LTE) conditionsarad to show tlae ionizirag chan'acteristics of this close-to-LTE plasn'xa. Dif['erent tlaeoretical criteriahave also been tested in order to select the minirnal er'uergy level frona which partial LTE cotrldbe considered.
社団法人日本物理学会の論文
1999-12-15