5314027787

POSTER SESSION, H50

HIGH RESOLUTION FOURIER TRANSFORM SPECTRUM OF AsH₃ IN LOW FREQUENCY REGION

ON. U LEN I KO V, GA. ONOPENKO. and O. PETRUNINA, Laborałory of Molccular Spectroscopy, Tomsk State Unwersity, 634050, Tom.sk, Russia; J. SCHRODERUS. AND S. ALANKO. Department of Fhysical Sciences, Univcrs\ty of Oulu. Lmnanmaa, P.O. Dox 333, FIN- 90571 Oulu, Finland.

The main goal of prezent study was in umierstaiuiing and analysis of complicatcd rotational structure of set of yibrational bands located near 3000 crn~^l. However. realisation of this projcct rcquired morę careful analysis of lower on frequency spectral regions near 2000 cm”¹ and 1000 cm"¹ than it was madę in earlier papers °.

Both tlie cold, and the hot bands which are located near 1000 cin"¹ and 2000 ciii"¹ regions were analysed, and both the rotational structures, and effective spectroscopic parameters of corresponding vibrational States were improved.

Sonie effects and peculiarities in high rcsolution spectra near 3000 cm^-1 are discussed. ^aM. Carlotti,

G. Di Lonardoand L. Fusina, J. Mol. Spectrosc., 102, 310 319 (1983); O.N. t’lcnikov, A.E. Che-glokov, G A. Shevchenko, M. Winnewisser, and B P. Winnewisser, J. Mol. Spectrosc., 157, 141 160 (1993); O.N. U!enikov, A B. Malikova, M Winnewisser, and B.P. Winnewisser, J. Mol. Spectrosc.. 172. 330 343 (1995).