theelectronicg...
Large mica end window neon-filled Geiger Mueller tube by Amperex type 200N is made for the detection of Alpha particles, however it also detects Beta and Gamm rays. The 200N has a 1.31" dia. Mica end window and an overall size of 4" long x .12" dia. near window (-) end and 0.255" dia. at the (+) positive tip.
The specs are as follows:
Plateau is in excess of 200V,
Slope plateau 5% to 10% per 100V,
Dead time approx. 200 microseconds, and
50 counts per minute max background (shielded 2" lead).
The 200N operates from 700 to 900VDC. All of the specs are from the 1958 Amperex Electron Tubes & Semiconductor catalog. The Amperex 200N tubes that we have are New Old Stock and we test each one for operation before shipping. Limited Quantity.
19 сен 2024
