Three-body collisions in cesium vapour in the presence of buffer gas
Gang Zhang
An experimental study of energy transfer collisions,Cs(6P3/2)+ Cs(6P3/2)+He→Cs(4FJ)+Cs(6S1/2)+He,in the range 337 K to 357 K,has carried out in a cell.Atoms were excited to the 6P3/2 state using a single-mode diode laser.The Cs(6P3/2) atom density and spatial distribution were mapped by monitoring the absorbion of a counterpropagating laser beam.The buffer gas enhanced the energy transfer between two 6P3/2,which was based on the measurement of the fluorescence from the 4FJ states populated by three-body collision.The three-body collision rate coefficients(in units of 10-27 cm6s-1) for 4F5/2 and 4F7/2 are 1.35±0.18,2.22±0.21,respectively.
Journal of Atomic and Molecular Physics•Jan 1, 2008•0 citations