THE EFFECT OF TEMPERATURE ON HIGH-VACUUM ELECTRICAL CONDUCTION (thesis)
The role positive-ion evaporation plays in the voltagecontrolling process in a well baked-out system was studied. It was found that the emission rate decreased as the system temperature was increased, and three ion peaks of mass 170, 18, and 1 were found in abundance. Further studies revealed a marked change in the electrical conductivity of the quartz supporting rod. Most of the ions at low temperatures and under very clean conditions are thought to be emitted from the surface by a process similar to sputtering. A continuous source of positive ions results from the bombardment by electrons and negative ions pulled from tbe rod daring charging. No positive ions were found to result from beta radiation, and the anode surface is nonuniform with respect to positive ion emission. Smaller anodes produce higher voltages, and under clean conditions this appears to be a fruitful field of research (J.RD.)
- Research Organization:
- Washington Univ., St. Louis
- NSA Number:
- NSA-12-014010
- OSTI ID:
- 4331470
- Report Number(s):
- AECU-3794
- Country of Publication:
- United States
- Language:
- English
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