Abstract
Molecular nitrogen ions, , are generated by the helium Penning ionization in a glow discharge chamber. In the B-X system of the rotational lines of the most prominent band, 391.44 nm (0,0), are resolved by a 0.5 m-long scanning monochromator. Four vibrational lines of are measured. A rotational temperature of tr = 304.6 K and a vibrational temperature of about 12000 K were measured. To define argon effects on the emission, the 391.44 nm line intensity was analyzed. radiation is reduced to half as argon added up to 50% to N2. This could be resulted in quenching or/and the charge exchange with either or by argon.
© 1994 Optical Society of America
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