A cylindrical, convoluted, flexible bellows is used to form an atomic or molecular storage vessel with constant surface area and surface properties but adjustable volume. When utilized as a storage bulb inside an atomic or molecular frequency standard such as a hydrogen maser, it provides an apparatus for obtaining an extremely accurate measurement of the frequency deviation caused by the interaction of gas atoms (or molecules) with the vessel wall surface.
National Aeronautics and Space Administration Report
- Pub Date:
- December 1975
- Frequency Standards;
- Gas Masers;
- Atomic Clocks;
- Instrumentation and Photography