Spectroscopy of HCN in the 6000 cm−1 Region

✍ Scribed by A. Saury; J.S. Wu; E. Carrasquillo

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 347 KB
• Volume: 164
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1994.1085

✦ Synopsis

This work implements a recently developed approach based on collisional energy transfer at high vibrational excitation to resolve new spectroscopic features of (\mathrm{HCN}) in the ground electronic state near (6000 \mathrm{~cm}^{-1}) vibrational energy and in the first excited electronic state. The approach combines direct overtone vibration excitation, to prepare highly excited molecules in the (\left(0.0^{\circ}, 2\right)) overtone state at (6519.6 \mathrm{~cm}^{-1}), with a laser-induced fluorescence spectroscopic probe via the (\dot{A}) state of vibrational levels subsequently populated by collisions from the overtone state. We report observation and rovibrational analyses of the (\left(2,3^{1.3}, 0\right)) and (\left(1,5^{3}, 0\right)) vibrational levels of the ground electronic state. This study also accesses the ((0,1,0)^{4}) level of the (\dot{A}) state, resolves its rotational structure. and derives an improved set of constants with which to model the (K) structure for the ((0,1,0)) vibration of the first excited electronic state. ic: 1994 Academic Press. Inc.