By O. P. Bochkova

Spectroscopic research of fuel combinations offers the equipment utilized in spectral research of gasoline combinations. The publication is anxious basically with emission research. It deals an intensive description of photoelectric tactics and quantitative equipment of quick fuel research; spectroscopic tactics in line with absorption within the ultraviolet and infrared areas of the spectrum; and the optico-acoustic procedure. Physicists will locate the textual content very informative.

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3 Hg). The electron temperature values obtained by Beck via probe measurements for high-frequency and DC discharges were identical at high p r e s s u r e s , and only at low p r e s s u r e s was a slight divergence noted. The probe measurement data reported by Beck are consistent with those obtained in later studies [87, 2 2 7 , 228] in which the electric parameters ( Te and ne ) of high-frequency and DC discharges HIGH-FREQUENCY DISCHARGE 47 were compared. Thus, the comparison of DC and high-frequency (5-Mc/s) discharges in helium, neon and argon was made by Dzerpetov and Pateyuk [ 2 2 7 ] , while A v r a m o v and Dzerpetov [87] studied it in helium and neon.

Batch-metering stopcocks (Fig. 17) are best for measuring the amount of gas. T h e s e differ from standard vacuum stopcocks only in the design of the plug. The latter lateral is sealed at the bottom, and the pocket replacing the opening has a capacity which varies from 3 one m m to 3 several c m . Mirtov and Boykov [289] designed an electrically stopcock for convenient and p r e c i s e metering of g a s e s . vice is capable of good performance over operated The d e - a wide range. The stopcock, or valve, is shown schematically in Fig.

In establishing the theory of the high-frequency discharge it is important to know whether the high-frequency discharge p o s s e s s e s some specific characteristics that distinguish it from other types of discharges and whether the frequency is a discharge parameter equal in importance to the current and the p r e s s u r e . If the d i s - charge technique is to be applied effectively in spectral analysis, it is important to know the effect of the frequency on the electric parameters of the discharge.

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