Photoionization of $nS$ and $nD$ Rydberg atoms of Rb and Cs from the near-infrared to the ultraviolet spectral region

Abstract

We present calculations of the photoionization (PI) cross sections of rubidium and cesium Rydberg atoms for light with wavelengths ranging from the infrared to the ultraviolet, using model potentials from [M. Marinescu, H. R. Sadeghpour, and A. Dalgarno, Phys. Rev. A 49, 982 (1994)]. The origins of pronounced PI minima are identified by investigating the free-electron wavefunctions. These include broad PI minima in the $nS$ to $\epsilon P$ PI channels of both Rb and Cs, with free-electron energy $\epsilon$, which are identified as Cooper minima. Much narrower PI minima in the $nD$ to $\epsilon F$ channels are due to shape resonances of the free-electron states. We describe possible experimental procedures for measuring the PI minima, and we discuss their implications in fundamental atomic physics as well as in practical applications.

8 pages, 2 figures

References in corpus (5)

• Probing many-body dynamics on a 51-atom quantum simulator
• Circularizing Rydberg atoms with time-dependent optical traps
• Formation of ultracold ion pairs through long-range Rydberg molecules
• Forbidden atomic transitions driven by an intensity-modulated laser trap
• Photoionization of Rydberg Atoms in Optical Lattices

Cited by in corpus (1)

• Gauge effects in bound-bound Rydberg-transition matrix elements