Gas diffusion induced by resonance light field

Accurate measurement of the sticking time and sticking probability of Rb atoms on a polydimethylsiloxane coating

“…where n 0 is the vapor density at the origin of the capillary ( x = 0 ) and 2 / 1 ) ( N D l (13) is the characteristic length of the decay in density along the capillary. Now by using equations (3), ( 4) and (11) we can write:…”

“…The major technical difficulty in many resonance cell experiments, such as cooling and trapping short-lived radioactive isotopes using a magneto-optical trap (MOT) [1][2][3][4][5][6][7][8][9][10] or experiments on light-induced drift (LID) [11][12][13][14][15][16][17][18][19] lies in the atomic vapor interaction with the inner wall of the resonance cell.…”

Self-organization driven by broad band light

“…Ab initio he proved his great H-theorem-the law of entropy increase in close thermodynamic system. An interesting example of the entropy decrease in the open gas system under light pumping was given by Gel'mukhanov and Shalagin [9,10]. The authors proposed realization of Maxwell's demon separating molecules.…”

Light-induced vapor jets

“…After the light-induced-drift effect (LID) was theoretically predicted [1] and experimentally observed [2,3] much work was devoted to the investigation of this phenomenon (see, for example, Refs. [4,5]).…”

“…In the first LID experiment with sodium [2] and then in the "optical piston" experiment [6], where the LID effect, under optically thick conditions, acts like a piston by pushing the whole vapor to the cell end, a great inIiuence of the capillary cell walls on the vapor drift was found. The adsorption of the atoms on the walls leads both to a very lengthy establishment of a steady-state vapor condition inside the capillary (up to about 10 times larger then the theoretical predictions [2]) and to a rather small velocity of the optical piston. A detailed analysis of these surface effects has been made both theoretically by Nienhuis [7] and experimentally by Gozzini et al [8].…”