Observation of "Diffusion Modes" in Measurement of the Diffusion Coefficient of Cesium in Noble Gases |
| P. Rudecki Institute of Physics, N. Copernicus University, Grudziądzka 5-7, 87-100 Toruń, Poland |
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| Received: August 3, 2001 |
| A set of experiments investigating diffusion of alkali atoms in the noble gases is reported. A cesium gradient in the cell was induced by electrodeless pulse discharge. In the transient signal of absorption, corresponding to the 2S1/2-n2PJ transitions, five diffusion modes were observed. The diffusion coefficient D of cesium in helium and argon has been measured in a spherical cell filled with a buffer gas of 2.5 to 30 hPa and for temperatures in the range from 275 K to 400 K. |
| DOI: 10.12693/APhysPolA.100.915 PACS numbers: 82.56.Lz, 34.90.+q |