MOSCOW BAUMANN STATE TECHNICAL UNIVERSITY
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AIM OF THE WORK

SHORT THEORY

   Plasma

   Radiation by the Thermodynamic Equilibrium

   Radiation in the Conditions of the Local Thermodynamic Equilibrium

   Method of Relative Intensities

   Advisable literature

REFERENCE INFORMATION

   Spectral lines

   Argon (Ar I)

   Argon (Ar II)

   Crom (Cr I)

   Iron (Fe I)

   Hydrogen (H I)

   Mercury (Hg I)

   Calculation formulas

EQUIPMENT

   Spectrometer

   Optical behch design

   Optical resolution

   CCD-detector

   Fibre optic cable

   Collimating lens

   AVALight lamp

   SPECTROMETER CONTROL PARAMETERS

EXPERIMENT

   Experiment scheme

   Àcquaintance with control interfaces

   Order of carrying out the work

   Practical part
 
Calculation formulas
Calculation formulas
Measured values of voltages in maximums of intensities of lines are connected with electronic temperature with the following dependence:
lg(Vki/Vlm)=lg[fikgil2lmSlm/(fmlgml2 kiSik)] - 5040(Ek-El)/Te
where fik and fml are powers of oscillator, gi and gmare statistic weights, lki and llm- waves lengths, Vki and Vlm, Sik and
Slm- voltages at the outlet of the booster of the direct current in max. of intensity and spectral sensitivities for waves lengths of transitions ki and lm respectively, Ek and El- energies of transitions( EV) , Te - electronic temperature (K).
Hence the electronic temperature can be calculated :