HIGH-RESOLUTION PHOTOACOUSTIC SPECTRUM OF ASH3 (600A(1) E) BANDS/

The high resolution spectrum of arsine in the region of 11470-11650 cm (-1) was recorded by a sensitive laser photoacoustic apparatus. The vi bration-rotation transitions of the local mode pair of bands (600A(1)/ E) were assigned and their major vibration-rotation parameters were ob tained by least-square fitting. The results indicate that the selectio n rules on the quantum number k have no effect in the high J values ow ing to strong Coriolis coupling. In addition, the intensities of vib-r otational transitions were estimated by comparison with standard water lines. (C) 1997 Elsevier Science B.V.