%0 Journal Article %T Photoionization Rates of Cs Rydberg Atoms in a 1064 nm Far Off-Resonance Trap %A J. Tallant %A D. Booth %A J. P. Shaffer %J Physics %D 2010 %I arXiv %R 10.1103/PhysRevA.82.063406 %X Experimental measurements of photoionization rates of $nD_{5/2}$ Rydberg states of Cs ($50 \leq n \leq 75$) in a 1064 nm far off-resonance dipole trap are presented. The photoionization rates are obtained by measuring the lifetimes of Rydberg atoms produced inside of a 1064 nm far off-resonance trap and comparing the lifetimes to corresponding control experiments in a magneto-optical trap. Experimental results for the control experiments agree with recent theoretical predictions for Rydberg state lifetimes and measured photoionization rates are in agreement with transition rates calculated from a model potential. %U http://arxiv.org/abs/1010.0734v1