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Results of theoretical calculations of ionization rates of Rb and Na Rydbergatoms by blackbody radiation (BBR) are presented. Calculations have beenperformed for nS, nP and nD states of Na and Rb, which are commonly used in avariety of experiments, at principal quantum numbers n=8-65 and at threeambient temperatures of 77, 300 and 600 K. A peculiarity of our calculations isthat we take into account the contributions of BBR-induced redistribution ofpopulation between Rydberg states prior to photoionization and field ionizationby extraction electric field pulses. The obtained results show that thesephenomena affect both the magnitude of measured ionization rates and shapes oftheir dependencies on n. The calculated ionization rates are compared with theresults of our earlier measurements of BBR-induced ionization rates of Na nSand nD Rydberg states with n=8-20 at 300 K. A good agreement for all statesexcept nS with n>15 is observed. We also present the useful analytical formulaefor quick estimation of BBR ionization rates of Rydberg atoms.Comment: 14 pages, 6 figures, 6 tables in Appendi

physical review. a, atomic, molecular, and optical physics/physical review, a, atomic, molecular, and optical physics

Ionization of sodium and rubidium<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>n</mml:mi><mml:mi>S</mml:mi></mml:mrow></mml:math>,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>n</mml:mi><mml:mi>P</mml:mi></mml:mrow></mml:math>, and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>n</mml:mi><mml:mi>D</mml:mi></mml:mrow></mml:math>Rydberg atoms by blackbody …

Ionization of sodium and rubidiumnS,nP, andnDRydberg atoms by blackbody …