Fourier Transform Infrared Emission Spectroscopy of ND and PH

✍ Scribed by R.S. Ram; P.F. Bernath

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 275 KB
• Volume: 176
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1996.0094

✦ Synopsis

The infrared vibration -rotation bands of ND in the X 3 S 0 state were recorded using a Fourier transform spectrometer. The bands were observed in a microwave discharge of a mixture of N 2 and D 2 in the presence of He. The rotational structure of six bands, 1 -0, 2 -1, 3 -2, 4 -3, 5 -4, and 6 -5, has been observed in the 1800 -2600 cm 01 region. The analysis of these bands provides an independent determination of the ground state vibrational constants in addition to an improved set of rotational constants. The principal molecular constants for the ground state are v e Å 2399.1255(299) cm 01 , v e x e Å 42.1064(212) cm 01 , v e y e Å 0.1203(54) cm 01 B e Å 8.908665(146) cm 01 , a e Å 0.254570(192) cm 01 , r e Å 1.036651(9) A ˚.

The molecular constants for PH have also been refined by combining the previous infrared [