Sealing of Mica Wnidows for Geiger-Muller Tubes
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United States of America Patent
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Issued Date -
Mar 25, 2010
app pub date -
Sep 10, 2009
filing date -
Sep 19, 2008
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The present invention provides a method for manufacturing radiation detectors such as Geiger-Müller detectors. The method includes pre-forming a frit ring via extrusion or stamping. The preformed frit ring is placed in the aperture of a metal cathode body along with a radiation transparent window made of mica. The window is slightly larger than the perimeter of the aperture, thereby forming an overlap area. The frit ring is placed between the cathode and window within this overlap area. The assembled components are then fired at an appropriate temperature to cause fusion of the frit with the metal cathode and window to form a gas-tight seal.
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