CAVITY CATHODE EFFECT IN CESIUM VAPOR (HOHLKATHODENEFFEKT IN CAESIUM-DAMPF).
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FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH
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The article deals with processes taking place in a hollow-cathode discharge tube with cesium vapor. The cathode here consists of two parallel plates the negative charges travel from the space between these plates out toward the anode. The cathode plates are made of nickel embedded in quartz and a cesium pill inside the tube produces the vapor atmosphere. Two sets of measurements were made 1 electrical current vs. pressure and current vs. distance between the two cathode plates 2 spectrographic intensity distribution of the Cs II lines 4616.13 and 4867.5 Angstroms, also of the Ba I 6019.17 Angstrom line for comparison. This distribution of intensity has a maximum in the middle of the intercathode space the magnitude of this maximum varies with pressure, attaining the highest value at about 0.01 mm Hg for both Cs lines. A direct relation between spectral intensity and discharge current is obtained by eliminating pressure as the independent variable for both. As a result, a straight proportion between current and intensity is found.
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