Abstract
In this work, the effects of addition of D 2 (Deuterium) in He(70%)–Ne(27%)–Xe(3%) gas mixture on the discharge characteristics were investigated at the pressure of 200 Torr. When the concentration of D 2 in He–Ne–Xe gas mixture was varied from 0 to 0.5%, we measured the firing voltage, the sustain voltage, the luminance, the luminous efficiency and the wall charge according to amount of D 2, respectively. In the case of a small addition of D 2, we have experimentally investigated that the increase of electron due to Penning effect improves an increase of Xe * and Xe 2 * that emits 147 and 173 nm photons. As a result, when the small addition of D 2 in He–Ne–Xe gas mixture, the firing voltage decreased by 9.8%, the sustain voltage decreased by 4.9%, the luminance increased by 19–44%, the luminous efficiency increased by 20–44% and the wall charge increased by 34–45%.
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