The formation of the Doppler contour PD(v) of absorption lines upon the excitation of particles in the volume of a gas-dynamic beam by light propagating in a direction orthogonal (reduced) to the beam axis is analyzed. Integral representations of PD(v)are obtained for arbitrary relations between the nozzle out-let diameter D and the collimating aperture diameter B in the excitation region are obtained. An optimal configuration at which the reduced Doppler contour is the narrowest at a high density of beam particles is revealed to be B/D = 2.
|Original language||English (US)|
|Number of pages||6|
|Journal||Optics and Spectroscopy (English translation of Optika i Spektroskopiya)|
|State||Published - Jun 1 2010|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics