Penning and associative ionisation of highly excited rubidium atoms

Abstract

Penning and associative ionisation of highly excited rubidium atoms View the table of contents for this issue, or go to the journal homepage for more

Energy-Pooling Processes in Laser-Excited Alkali Vapors : An Update on Experiments

“…The indetermination on K shows, as expected, that this experiment is not the best way to investigate process (14); a simple way to perform this experiment would be to excite by two photon the transition 3s-4d and then detect the sensitized fluorescence 4f-3d.…”

“…The equations are therefore where K and K ' are the rate coefficients of process (14); they are related to each other /25/ through the level degeneracy K/K' = (g4f/g4d)e~p(-&/kT) = 1.26. The solution of eq.…”

Kinetics of Rb2+ and Rb+ formation in laser-excited rubidium vapor

“…The theoretical model involves the most important collisional and radiative interactions under the experimental conditions of Barbier et al [5]. Also, a comparison between the theoretical results and the experimental measurements, of Cheret et al [1] for the ion current of the atomic ion and molecular ion, is considered in the present work.…”

“…On the other hand, resonant laser excitation has played a vital role in coupling energy into vapor. Therefore the reaction of a dense ru-bidium vapour, resonantly irradiated by a CW laser, has been the subject of a number of investigations during in recent years [1][2][3][4][5][6][7]. These studies have shown that a large variety of mechanisms take place in the excited media.…”

“…Of particular interest are the ionization mechanisms and the energy transfer mechanisms which are implied in or serve the ionization. In addition, these studies have shown that associative [1] ionization, Penning [2] ionization, photoionization [3], and other ionization mechanisms [4][5][6][7] can be important in resonantly excited vapors.…”