Determination of the static polarizability of the8sS1∕22state of atomic cesium

Abstract

We report a precise determination of the static polarizability of the 8s 2 S 1/2 state of atomic cesium, carried out jointly through experimental measurements of the dc Stark shift of the 6s 2 S 1/2 → 8s 2 S 1/2 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 0 3 , in very good agreement with our theoretical value of 38,260± 290a 0 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 0 3 .

Electric quadrupole moments of metastable states ofCa+,Sr+, andBaJiang1, Arora2, Safronova3 2008Phys. Rev. ASelf Cite354400View full textAdd to dashboardCite

“…We take the scaled SD numbers as the final values based on the comparisons of similar calculations in alkali-metal atoms with experiment (see Refs. [41,42,43,44,45] and references therein).…”

“…The ability to develop more precise optical frequency standards will open ways to improve Global Positioning System (GPS) measurements and tracking of deep-space probes, perform more accurate measurements of the physical constants and tests of fundamental physics such as searches for nonlinearity of quantum mechanics, gravitational waves, etc. Some of the promising candidates for such ultra-high-precision frequency standards with trapped ions are 27 Al + [2,3], 199 Hg + [4,5], 171 Yb + [6,7], 87 Sr + [8,9], 43 Ca + [10], 115 In + [11], and 137 Ba + . One of the largest sources of systematic errors in such frequency standards with monovalent ions is due to interaction of the quadrupole moments of metastable states with stray electric field gradients [12,13].…”

Measurements of the static polarizability of the8s 2S1/2state of atomic cesium

“…We recently reported a measurement of the static polarizability α of the 8s 2 S 1/2 state of atomic cesium [1]. We carried out this measurement on the two hyperfine components (F = 3 → F = 3 and F = 4 → F = 4) of the two-photon 6s 2 S 1/2 → 8s 2 S 1/2 transition.…”

Relativistic many-body calculation of energies, oscillator strengths, transition rates, and lifetimes of Sc III ion

“…If the term Z (c) strongly dominates and R > 3, we evaluate the final uncertainty as max(SDsc-SDpT, SDsc-SDpTsc). We note that we have conducted numerous comparisons of all available data on various properties of many different monovalent systems with different types of experiments in many other works (see [2,48,49,[53][54][55][56][57][58][59][60][61][62][63][64][65], and references therein) and found that such procedures do not underestimate the uncertainties.…”