title: Sensitive measurement of radiation trapping in cold-atom clouds by intensity correlation detection.
abstract: We present experimental evidence that the intensity correlations of light scattered from a cold-atom cloud are sensitive to the presence of small amounts of radiation trapping in an atomic sample of density 6 x 10(8)/cm3, with an optical depth (for a resonant light beam) of 0.4. This density and optical depth are approximately an order of magnitude less than the density and on-resonance optical depth at which effects of multiple scattering in cold-atom clouds have been previously observed [Phys. Rev. Lett. 64, 408 (1990)].
authors.affiliation: Department of Physics, Miami University, Oxford, Ohio 45056-1866, USA.
authors.forename: Ronald
authors.initials: R
authors.lastname: Stites
authors.forename: Matthew
authors.initials: M
authors.lastname: Beeler
authors.forename: Laura
authors.initials: L
authors.lastname: Feeney
authors.forename: Soo
authors.initials: S
authors.lastname: Kim
authors.forename: Samir
authors.initials: S
authors.lastname: Bali