Abstract
The photon flux technique has been used to study the cathode region of a steady-state Townsend discharge. Spatial variations in the radiation emitted from the C3fIu and B2.r~ states of molecular nitrogen were etected in the vicinity of the cathode for EIN"" 331 and 555 Td. In particular, the second positive emission at 337�1 nm is similar to the Holst-Oosterhuis layers observed in rare gas discharges.
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