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Excitation of high-lying state of the sodium atom by dye-laser radiation and their autoionization in an electric field

Rafael V Ambartsumyan, G. I. Bekov, Vladilen S Letokhov, V.I. Mishin

Published May 1, 1975• 2 citations
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An experimental investigation was made of the influence of a laser radiation field on the spectrum of barium atoms. The investigation was carried out by the method of three-photon ionization spectroscopy using dye laser radiation (ω = 14 800–18 700 cm − 1 ). The electric field intensity of the laser radiation was 10 3 –10 6 V/cm. This laser radiation field had a strong influence on a number of bound and autoionizing states. The nature of this influence depended on the ratio of the excitation frequencies of bound and autoionizing states.