# DIFFERENCE FREQUENCY LASER SPECTROSCOPY OF $NH_{2} (\upsilon_{1}, \upsilon_{3})$ AND $NH (\upsilon = 1+0)$

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/29069

Files Size Format View
1982-ME-8.jpg 92.12Kb JPEG image

 Title: DIFFERENCE FREQUENCY LASER SPECTROSCOPY OF $NH_{2} (\upsilon_{1}, \upsilon_{3})$ AND $NH (\upsilon = 1+0)$ Creators: Amano, T.; Bernath, P. F.; McKellar, A. R. W. Issue Date: 1982 Publisher: Ohio State University Abstract: The $\upsilon_{1}$ and $\upsilon_{3}$ fundamental bands of $NH_{2}$ have been detected in absorption in the 2.9 to $3.2 \mu m$ region using a difference frequency laser and a long path Zeeman-modulated discharge cell. The tunable infrared radiation was generated by mixing the output of an argon ion laser with that of a single-mode dye $laser^{1}$. $NH_{2}$ was produced by a, d, c, discharge in flowing $NH_{3}$ at a pressure of about 0.8 Torr (106 Pa). About 100 vibration-rotation transitions have been measured and a simultaneous analysis of the Coriolis-coupled $\upsilon_{1}$ and $\upsilon_{3}$ states has been made. These results may prove useful in a search for interstellar $NH_{2}$ by means of its vibration-rotation spectrum. While recording the spectrum of $NH_{2}$, transitions belonging to the fundamental band of the NH radical were also observed. These results will be discussed. Description: $^{1}$A.S. Pine, J. Opt. Soc. Am. 64, 1683 (1974), and 66, 97 (1976). URI: http://hdl.handle.net/1811/29069 Other Identifiers: 1982-ME-8