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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 68, Iss. 4 — Apr. 1, 1978
  • pp: 432–437

High-resolution electronic emission spectrum of molecular nitrogen at 15300 Å

W. Benesch, C. C. Jones, E. J. Beiting, III, and P. D. Feldman  »View Author Affiliations


JOSA, Vol. 68, Issue 4, pp. 432-437 (1978)
http://dx.doi.org/10.1364/JOSA.68.000432


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Abstract

The 5 m Jarrell-Ash Czerny-Turner spectrograph at the Institute for Molecular Physics has been adapted to spectrometric operation in the 1–2 µm wavelength region. A lead screw assembly with a stepping motor drive has been installed to translate an exit slit that is focused onto a cooled intrinsic germanium detector. The exceptional sensitivity of this detection system has produced good signal-to-noise ratios in the third order of a 300 line/mm echelle grating which yields a reciprocal dispersion of 1.44 Å/mm at the exit slit. The resolution achieved was energy limited at 0.046 cm-1 and the precision of frequency measurement was 0.007cm-1. The 0-0 band of the B3Σ-uB3IIg system of molecular nitrogen was the subject of the investigation. Although this system is known as the infrared afterglow system, the band emits strongly in a dc glow discharge and it has been possible to resolve nearly 1000 lines in the region are from the 0-0 B′ → B transition, with only a small 1 PG emission toward the red end of the band.

© 1978 Optical Society of America

Citation
W. Benesch, C. C. Jones, E. J. Beiting, III, and P. D. Feldman, "High-resolution electronic emission spectrum of molecular nitrogen at 15300 Å," J. Opt. Soc. Am. 68, 432-437 (1978)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-68-4-432

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