Determination of semi opaque plasma temperatures

Details Determination of semi opaque plasma temperatures Determination of semi opaque plasma temperatures

1975-01-17

1976-08-03

Corbin, John K.

Optics: measuring and testing

Optical pyrometers

Plural color responsive

356 74, G01J 560

Patent

active

039726150

ABSTRACT:
The temperature of heated gaseous plasmas in non-controllable, non-laboratory applications is measured by an improved spectroscopic analysis. A low atomic number trace gas, such as hydrogen, or helium, is added to the plasma. Temperature is obtained by measuring the ratio of the intensities of two lines of the hydrogen-atom series, e.g. H.sub..alpha. and H.sub..beta. lines of the BALMER SERIES. The technique is applicable in the few electron volt range and the method is applicable even though the plasma is not optically thin and the total number density of the particles in the plasma, at the instant the measurement of temperature is performed, is unknown.

REFERENCES:
patent: 3817622 (1974-06-01), Billman et al.
shumaker et al. National Bureau of Standards Special Publication 300, vol. , 1968, pp. 416-420.

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