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Accession Number:
AD0417361
Title:
Stable Dense Cold Plasma
Corporate Author:
UNIFIED SCIENCE ASSOCIATES INC PASADENA CA
Report Date:
1963-08-20
Abstract:
Electrical conductivities of sodium-ammonia solutions have been measured from -80 to 185 degrees C, i.e., most of the liquid range and some of the gaseous range. The objective of these studies is the exploration of the possibility of using such gaseous solutions as plasma sources. The attractive features of these gases found in this study include plasma lifetimes in excess of 3,000 seconds the plasmas being at equilibrium, temperatures as low as 134 degrees C and electrical conductivities of at least 100 mhoscm. Visual appearances of the dense gases are the same as those of the liquids. Gases with low concentrations of sodium are blue and ones with high concentrations are yellow-red metallic copper-gold. Electrical conductivities of the liquids increase with in creasing temperature until conductivity maxima are reached at 80 to 100 degrees C. In dilute solutions, the temperatures of these maxima are close to the solution critical temperatures because of this, conductivities of supercritical gases have been measured that are higher than the conductivities of the liquids of the same mole fractions at room temperature.
Descriptive Note:
Semiannual technical summary rept. for 20 Aug 1963
Supplementary Note:
Paper presented at Colloque Weyl Universite' Catholique, on 24-28 June 1963, at Lille France.
Pages:
0072
Distribution Statement:
Approved for public release; distribution is unlimited.
Contract Number:
NONR-3437(00)
Contract Number 2:
ARPA ORDER-194
File Size:
2.67MB
