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Volume 124, number 2 CHEMICAL PHYSICS LETTERS 14 February 1986 THE EFFECT OF COLLISIONS ON THE INTENSITY AND POLARIZATION
 

Summary: Volume 124, number 2 CHEMICAL PHYSICS LETTERS 14 February 1986
THE EFFECT OF COLLISIONS ON THE INTENSITY AND POLARIZATION
OF LASER-INDUCED D `II -+ X `Z + FLUORESCENCE FROM NaK
M.P. AUZIN'SH, R.S. FERBER, Ya.A. HARYA and LYa. PIRAGS
P. Stuchka L.dvran St&e Unrversrty. Rqa 226098, USSR
Recetved 8 August 1985; in final form 30 December 1985
Laser-Induced fluorescence was applied for determming total deactivation cross sections of the level (17,94) D'D of NaK
molecules in collisions with He, Ne, Ar, Kr, Xe, as well as with K atoms. Relaxation cross sections of population and
alignment were found to coincide within experimental error. The kinetics of the transtent process was used for determining the
cross section of thermalization of the optically depopulated level of the electromc ground state (5.67) X `I+ in NaK + Ar
collisions.
1. Introduction
The NaK molecule has recently been the object of
intense investigation by means of laser-induced fluo-
rescence (LIF) [l-9]. This work was aimed at elucida-
tion of the term structure and at studying relaxation
processes in the deactivation of optical excitation ener-
gywhere interesting peculiarities have been found. En-
ergy transfer has been observed and studied from the
D III term to the triplet d 311term,with subsequent ra-

  

Source: Auzinsh, Marcis - Department of Physics, University of Latvia

 

Collections: Physics