Spectroscopy of the NO molecule in N2 and mixed N2/Kr matrices

✍ Scribed by M. Chergui; N. Schwentner; A. Tramer

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 588 KB
• Volume: 201
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(93)85054-r

✦ Synopsis

Absorption, emission and excitation spectra of NO in N1 and mixed N2/Kr matrices at various N2 concentrations have been recorded by means of tunable synchrotron radiation and ArF laser excitation. The gas-to-matrix shifts, bandwidths and Stokes shifis of the lowest Rydberg level A 2Z+ (Y=O) level increase linearly with N2 concentration. The blue-shift is attributed to modifications in the bulk properties of the crystals and not to local perturbations. In emission, the fluorescence from B % (u=O) and the phosphorescence from a "II (v=O) are observed. While the former is little affected by the presence of N2, the latter is strongly broadened and red-shifted. High-resolution scans and lifetime measurements upon laser excitation support the existence of at least two classes of NO sites.