Resonance Broadening of Caesium
- 1 April 1942
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 61 (7-8), 465-469
- https://doi.org/10.1103/physrev.61.465
Abstract
The resonance broadening of homogeneous Cs vapor in absorption was studied by means of the contour method. The intensities were obtained via the method of "astigmatic photometry" by utilizing the astigmatism of the Rowland grating. The pressure of the homogeneous absorbing vapor ranged from to 17.5 mm Hg. The half breadth varied rather linearly with the number of atoms per unit volume, with , for the and eomponents of the resonance lines, respectively. The average value of the ratio of half breadths was found to be 1.8. The experimental half-width is found to be about 1½ times larger than that predicted by W. V. Houston. Below pressures of 10 mm Hg the lines exhibited symmetrical broadening according to the "dispersion" formula. At higher pressures indications of a violet and red asymmetry are present for the and components, respectively. A definite band on the red side of the and one on the violet side of the was observed.
Keywords
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