Abstract
The pressure broadening and shift rates for the cesium transition with the noble gases and , , HD, , , , , and were obtained for pressures less than 300 torr at temperatures under by means of laser absorption spectroscopy. The collisional broadening rate, , for He, Ne, Ar, Kr, Xe, , , HD, , , , , and are 24.13, 10.85, 18.31, 17.82, 19.74, 16.64, 20.81, 20.06, 18.04, 29.00, 26.70, 18.84, and 26.00 MHz/torr, respectively. The corresponding pressure-induced shift rates, , are 4.24, , , , , , 1.11, 0.47, 0.00, , , , and 6.01 MHz/torr. These rates have then been utilized to calculate Lennard-Jones potential coefficients to quantify the interatomic potential surfaces. The broadening cross section has also been shown to correlate with the polarizability of the collision partner.
2 More- Received 3 September 2009
DOI:https://doi.org/10.1103/PhysRevA.80.062718