Ionization of Rydberg atoms by blackbody radiation

I.I. Beterov, D.B. Tretyakov, I.I. Ryabtsev, V.M. Entin, A. Ekers, N.N. Bezuglov

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Abstract

We have studied an ionization of alkali-metal Rydberg atoms by blackbody radiation (BBR). The results of the theoretical calculations of ionization rates of Li, Na, K, Rb and Cs Rydberg atoms are presented. Calculations have been performed for nS, nP and nD states which are commonly used in a variety of experiments, at principal quantum numbers n=8-65 and at the three ambient temperatures of 77, 300 and 600 K. A peculiarity of our calculations is that we take into account the contributions of BBR-induced redistribution of population between Rydberg states prior to photoionization and field ionization by extraction electric field pulses. The obtained results show that these phenomena affect both the magnitude of measured ionization rates and shapes of their dependences on n. A Cooper minimum for BBR-induced transitions between bound Rydberg states of Li has been found. The calculated ionization rates are compared with our earlier measurements of BBR-induced ionization rates of Na nS and nD Rydberg states with
Original languageEnglish
Pages (from-to)013052_1-32
JournalNew Journal of Physics
Volume11
DOIs
Publication statusPublished - 2009

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Beterov, I. I., Tretyakov, D. B., Ryabtsev, I. I., Entin, V. M., Ekers, A., & Bezuglov, N. N. (2009). Ionization of Rydberg atoms by blackbody radiation. New Journal of Physics, 11, 013052_1-32. https://doi.org/DOI: 10.1088/1367-2630/11/1/013052