Apparent power-dependent frequency shift due to collisions in a cesium fountain |
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Authors: | Szymaniec K Chalupczak W Weyers S Wynands R |
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Affiliation: | Nat. Phys. Lab., Teddington; |
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Abstract: | We describe a situation where a varying collisional frequency shift in cesium fountain primary frequency standards can be misinterpreted as a power-dependent shift. This misinterpretation may affect analyses of fountains test-operated at multiple pi/2 microwave pulse areas. Such tests are typically performed in the search for microwave- and cavity-related systematic frequency biases. |
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