EGAS41 - Swansea University

41 st EGAS CP 30 Gdańsk 2009
Raman scattering of the light on metastable levels of diatomics
A.V. Glushkov 1,2,∗ , N.V. Mudraya 1 , T.B. Perelygina 1
1 Odessa State University, P.O.Box 24a, 65009, Odessa-9, SE, Ukraine
2 Russian Academy of Sciences, 142090, Troitsk, Russia
∗ Corresponding author: glushkov@paco.net
Laser action on molecules leads to different non-linear processes, including multi-photon
phenomena, light scattering. The intensities and polarization of lines in the spectra are
defined by polarizability and derivative on inter-nuclear distance. We study the Raman
vibration scattering of the light on metastable levels of molecules (H 2 , HD, D 2 , Cs 2 , Fr 2 ).
New numerical method for construction of the Green electron functions for optical electrons
and electron wave functions is developed within the pseudo-potential approach in
the spheroid coordinates system that allows to take into account non-spherical character
of molecular field [1,2]. We have carried out the calculations of molecular polarizability,
its derivative on inter-nuclear distance, depolarization degree under Rayleigh and Raman
light scattering on the frequencies of the Rb, Nd lasers. Analysis of results of the calculation
of a polarizability, its derivative on inter-nuclear distance, for example, for excited
triple metastable c 3 Π n , states of the H 2 , HD, D 2 molecules on the frequencies of the
Rb (1.78eV) and Nd (1.18eV) lasers shows that the main contribution into polarization
of the cited metastable molecules is provided by changing the electron shell due to the
laser field action. An influence of the nuclear motion terms is quite little. Relativistic
generalization of proposed approach is carried out too.
References
[1] A. Glushkov et al., Int. J. Quant. Chem. 99, 879-886 (2004); 104, 512-519 (2005);
104, 562-567 (2005)
[2] A. Glushkov, S. Malinovskaya, O. Khetselius, Eur. Phys. J. T160, 195-204 (2008);
Mol. Phys. 106, 1257-1262 (2008).
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