Abstract

In investigations of hyperfine structure (hfs) by the quantum beat method, the two-photon excitation scheme was introduc to4tta a numb of highly excited D states of some alkali metal isotopes ( K, K, Rb and Rb). In the present paper some details of the experimental technique are presented. The values of the magnetic-dipole interaction constant A and the electric-quadrupole interacion constant B, obtained in a series of experiments for the states of interest (6 D312 5/2 of 39K, 62D312 of 41K, l1,122D312 of °5Rb, lO-132D312 and 9-132D512 of 87Rb) are summarized and compared with other results concerning hfs of the D states of the same isotopes. The relatively simple method proved to be quite effective .n extending the measurements of hyperfine interaction constants to highly excited D states of alkali metal atoms.

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