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Infrared Diode-Laser Molecular-Beam Spectrum of the ν2Band of Chlorine Nitrate at 1293 cm−1

✍ Scribed by J.L. Domenech; J.-M. Flaud; G.T. Fraser; A.M. Andrews; W.J. Lafferty; Patricia L. Watson

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
295 KB
Volume
183
Category
Article
ISSN
0022-2852

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✦ Synopsis

The n 2 band of chlorine nitrate ( ClONO 2 ) near 1293 cm 01 has been measured in a molecular beam with a diodelaser spectrometer. The low rotational temperature of the molecular beam, Ç23 K, simplifies the spectrum allowing essentially complete assignment of the 35 Cl and 37 Cl lines. An a / b hybrid band is observed with the a-type transition moment being approximately a factor of 2 larger than the b-type transition moment. An inverted shift of the band origins is found with the 37 Cl band origin blue shifted from the 35 Cl by /0.37 cm 01 . This isotopic shift is attributed to an unidentified anharmonic resonance. Precise spectroscopic constants for the bands of each isotopic species are determined to allow future simulations for modeling atmospheric transmission and for remote sensing applications.

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