Figure 3.

Typical plasma emission spectra of H2 and CH4 gaseous mixture. With various H2 flow rates from 5 to 20 sccm. Total gas pressure is 0.5 Torr and applied DC pulsed power is 200 W.

Chan et al. Nanoscale Research Letters 2013 8:285   doi:10.1186/1556-276X-8-285
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