Publications

Interferometric measurements of dynamic polarizabilities for metal atoms using electrically exploding wires in vacuum

Sarkisov, G.S.; Beigman, I.L.; Shevelko, V.P.; Struve, Kenneth W.

Measurements within 10% accuracy of the dynamic dipole polarizabilities α (λ) for five nonrefractory metal atoms (Mg, Ag, Al, Cu, and Au) at laser wavelengths of λ=532 and 1064 nm are presented using electrical explosion of thin wires in vacuum and a novel laser probing integrated-phase technique. The technique is based on single-wavelength interferometry and does not require axial symmetry of the tested object. Theoretical prediction of α (λ) for wavelengths λ=355, 532, and 1064 nm, as well as the static dipole polarizabilities αst, are also presented. An agreement within 20% was obtained between calculated data, recommended static polarizabilities αst, and the measured dynamic polarizabilities α (532 nm) and α (1064 nm). © 2006 The American Physical Society.