Study of dusty structures influence on spectral line profile of neon

Charged macroparticles levitated in plasma can form ordered dusty structures which influence on plasma conditions. Changes in plasma spectral characteristics as dusty particles are injected can detect this influence. For instance, changing atomic temperature leads to changing spectral lines profiles. We study the profile of a 585 nm neon spectral line in the dusty structures. The structures are formed in a glow discharge positive column with 50-150 Pa pressure and 1-9 mA current. The profile is scanned with a Fabry - Perot interferometer by changing air pressure between interferometer mirrors. We present a data processing algorithm that is resistant to noise and scanning speed instability. We have found an upper bound of the dusty structures influence on the profile width. Appearance of macroparticles changes atomic plasma temperature less than by 10 K.