Collision Broadening and Shift of Cesium D2Resonance Line Perturbed by Every Rare Gas

Collision broadening and shift of the resonance line 6 2 S 1/2 -6 2 P 3/2 of Cs perturbed by each rare gas at temperature of 293 K were precisely measured with using a single mode diode laser. The broadening and the shift measured at low gas pressures (below 200 mbar) of rare gas showed an excellent linear dependence on atomic density. The broadening and the shift constants are obtained and cross sections of the broadening and the shift are estimated. The broadening and the shift constants are compared with the previously obtained experimental and theoretical results. The cross sections are discussed as a function of atomic parameters of the rare gas.