Laser-induced resonant multiphoton and collisional ionizations of rubidium atoms
С. А. Бахрамов, E. V. Vaganov, А. М. Коххаров +1 more
Rubidium vapor (1011 - 1014 cm-3) was irradiated by a dye-laser beam (10 kW(DOT)cm-2 - 2 MW(DOT)cm-2, pulse duration approximately 30 nsec, linewidth <EQ 0.25 cm-1), which was tuned to the D1,2-resonance lines. The mutual competition of the two photon ionization, associative ionization and Penning ionization of the laser excited rubidium atoms was investigated. The data of laser intensities and a rubidium vapor concentrations, which results in domination of the each ionization channels were founded. On the basis of the received experimental results, the cross-section values for the multiphoton and collisional ionization channels of laser-excited atoms were determined.
Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•May 30, 2002•3 citations