Spectrographic study of chemically generated cesium plasmas

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Abstract

A spectrographic study has been made of the cesium spectrum emitted in the burning of CsNO3:Al and CsClO4:Al mixtures. Line width measurements in conjunction with the line broadening theory of Griem for cesium yield a value of 2·5×1015 electron/cm3 at atmospheric pressure for the CsNO3:Al plasma. Although a value is also given for the case of the CsClO4:Al plasma it can only be considered as a rough estimate because the Griem theory is not applicable to this plasma due to the predominant concentration of Cl- as a negative species. Theoretical values for the electron densities and densities of the major species of two plasmas, assuming thermodynamic equilibrium, have been computed and are compared with the experimental values.

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This work was supported by the Air Force Office of Scientific Research under Contract No. AF 49 (638)-651.

†

Nuclear physicist, Nucleonics Division, U.S. Naval Research Laboratory, Washington, D.C.

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