Low Temperature Physics: 36, 439 (2010); https://doi.org/10.1063/1.3432261 (9 pages)
Физика Низких Температур: Том 36, Выпуск 5 (Май 2010), c. 549-558 ( к оглавлению , назад )
Study of the cluster formation in low-temperature systems. Spectral manifestation of resonance dipole-dipole interactions between nondipole polyatomic molecules
A.N. Cherevatova, V.N. Bocharov, T.D. Kolomiitsova, D.N. Shchepkin, and K.G. Tokhadze
Physical Faculty, St. Petersburg State University, Peterhof, St. Petersburg 198504, Russia
Received January 5, 2010
Resonance dipole–dipole interactions are shown to strongly manifest themselves in fundamental and overtone band shapes of low-temperature systems, consisting of polar and nonpolar molecules as well with a relatively large first derivatives (P′ > 0.3 D) of the dipole moment. The rough model on the basis of the interaction between two non-degenerate, doubly degenerate, and triply degenerate oscillators was developed to study pairs of interacting molecules and clusters in low-temperature condensed systems. The concentration dependences of second- and third-order spectral band moments permitted the number of molecules in clusters to be estimated.
PACS: 78.30.–j Infrared and Raman spectra;
Ключевые слова: spectral moments, dipole–dipole interactions, clusters, low-temperature molecular systems.