Atomic frequency standard cell and method for forming same

Details Atomic frequency standard cell and method for forming same Atomic frequency standard cell and method for forming same

H - Electricity

03

L

H03L 7/26 (2006.01) C03B 23/20 (2006.01) G04F 5/14 (2006.01)

Patent

CA 2098966

ABSTRACT OF THE DISCLOSURE An atomic frequency standard cell having low helium permeability includes first and second windows sealed by fusible annular gaskets to sealing surfaces defined by a tubular cylindrical body. One of the windows defines an opening, and a fill tube is sealed to the window adjacent the opening by a tube gasket. The gaskets are made of a lower softening point glass such as borosilicate glass, and the body, windows and fill tube are formed of a higher softening point glass such as aluminosilicate glass. The assembly is sealed together by heating it to a temperature that causes the gaskets to fuse and seal the adjacent components together.

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