High-Resolution Infrared Measurement of the ν10 Band of Propyne-d1 Using a Synchrotron Radiation Source

✍ Scribed by R. Paso; V.M. Horneman

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 355 KB
• Volume: 172
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1995.1199

✦ Synopsis

A high-resolution Fourier transform spectrum of propyne- (d_{1}) in the region from 275 to 350 (\mathrm{cm}^{-1}) of the lowest fundamental band (\nu_{10}) was recorded at the MAX Laboratory in Lund. Sweden, using a synchrotron radiation source. At the MAX Laboratory a Bruker IFS 120-HR Fourier transform infrared spectrometer is connected to the (550-\mathrm{MeV}) storage ring in such a way that part of the synchrotron radiation from the ring is directed to the source compartment of the spectrometer to replace the normal blackbody radiation sources. The resolution obtained was about (0.0010 \mathrm{~cm}^{-1}) and the signal-to-noise ratio in the sum spectrum of 50 scans was about 70 . More than 1880 transitions from subbands with (K \Delta K=-10) to +8 were used in the calculations. The standard deviation of the least-squares fit with 16 molecular parameters was (0.00010 \mathrm{~cm}^{-1}). The performance of the synchrotron radiation source in high-resolution molecular spectroscopy measurements in the far-infrared region is compared to conventional Globar source measurements.

C! 1995 Academic Press, Inc.