CAVITY CATHODE EFFECT IN CESIUM VAPOR (HOHLKATHODENEFFEKT IN CAESIUM-DAMPF).
Abstract
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1967
- Accession Number
- AD0823691
Entities
People
- C. Popovici
- E. Badareu
- I. Iova
- M. Somesan
Organizations
- National Air and Space Intelligence Center