“PRODUCTION ENGINEERING MEASURE FOR HIGH RANGE GEIGER MUELLER TUBE.” “SECOND QUARTERLY REPORT COVERING THE PERIOD FROM SEPTEMBER 1972 TO NOVEMBER 1972”

摘要

An investigation of the proper techniques employed to provide stable, predictable performance, G-M tubes for use as the high range detector of the AN/VDR-1 is discussed. The techniques include special cathode and anode surface treatment to prevent secondary emissions and resultant spurious counts (instability) and up-dated outgassing and filling procedures to improve gas stability and reduce absorption thereby improving voltage stability. In the time period of this report a second set of engineering test samples was fabricated and filled to a starting voltage range of 430 plus or minus 10 volts. Initial tests data indicates a trend toward achieving the required critical parameter of starting voltage stability.