Determination of the static polarizability of the 8s{sup 2}S{sub 1} at {sub {approx}}{sub sol{approx}} at {sub 2} state of atomic cesium
- School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907 (United States)
We report a precise determination of the static polarizability of the 8s{sup 2}S{sub 1} at {sub {approx}}{sub sol{approx}} at {sub 2} state of atomic cesium, carried out jointly through experimental measurements of the dc Stark shift of the 6s{sup 2}S{sub 1} at {sub {approx}}{sub sol{approx}} at {sub 2}{yields}8s{sup 2}S{sub 1} at {sub {approx}}{sub sol{approx}} at {sub 2} transition using Doppler-free two-photon absorption and theoretical computations based on a relativistic all-order method. We enhance the precision of the measurement by imposing phase-modulation sidebands on the laser beam and by using a pair of vapor cells, one of which serves as a reference, and measuring the absorption spectrum in each cell with a single scan of the laser frequency. The measured value for the polarizability of the 8s state is 38,060{+-}250a{sub 0}{sup 3}, in very good agreement with our theoretical value of 38,260{+-}290a{sub 0}{sup 3}. In addition, the small difference in the Stark shift measurement for the two hyperfine states that we examine yields a variation in the polarizability due to the magnetic dipole contact interaction of 290{+-}30a{sub 0}{sup 3}.
- OSTI ID:
- 20982106
- Journal Information:
- Physical Review. A, Vol. 75, Issue 2; Other Information: DOI: 10.1103/PhysRevA.75.022507; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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