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Optogalvanic effect; two photon excitation; emission spectrum

Laser optogalvanic (LOG) and emission spectra of the N₂ molecule have been recorded at different discharge voltages and gas pressures in the spectral region 5400–6150 Å. It is observed that in the optogalvanic spectrum bands belonging to several systems develop extensively. Under the present discharge conditions bands of the first positive system are predominant. The variation of the signals with pressure and voltage in the two cases is discussed.

G Ullas¹ S B Rai¹

1. Laser and Spectroscopy Laboratory, Department of Physics, Banaras Hindu University, Varanasi - 221005, India

Published

June 1991

Manuscript received

20 July 1990

Manuscript revised

14 January 1991