Session M1: Poster Session II (4:00 pm - 6:00 pm)
4:00 PM–4:00 PM, Thursday, May 27, 2010
Room: Exhibit Hall
Abstract ID: BAPS.2010.DAMOP.M1.186
Abstract: M1.00186 : Collisional disorientation cross section in the J=1/2 cesium atoms
Authors:
Dave S. Fisher
Sarah Lauber
Robert Misconin
Sean Baumgartner
Burcin S. Bayram
(Miami University, Physics Department)
Measurements of collisional depolarization cross sections play important role to gain valuable information about the interaction between neutral and rare-gas atoms. A key element to understand collision dynamics is the detail analysis of the polarization of the emitted photons. We have experimentally investigated collisional cross section of the excited $J$=1/2 cesium atoms, by collisions with the ground level argon atoms from a circular polarization spectra. Orientation in the $J$=1/2 level was optically induced by a circularly polarized light with a positive helicity. A two-photon double-resonance $6s\,^2S_{1/2}$$\rightarrow$$6p\,^2P_{1/2}$$\rightarrow10s\,^2S_{1/2}$ condition was achieved using nanosecond pulse dye lasers, and an intensity of the cascade fluorescence was monitored in the presence of argon atoms ranging from 5 mbar to 133 mbar. We present collisional disorientation cross section which was extracted from the circular polarization spectra.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2010.DAMOP.M1.186