Optical piston in rubidium

Hamel, Wolfgang; Streater, A. D.; Woerdman, J. P.

doi:10.1016/0030-4018(87)90217-3

Cited by 20 publications

(11 citation statements)

References 12 publications

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“…For other alkali atoms, experimental investigations of bright optical pumping have not been reported. However, the numerical simulations performed for the analysis of light-induced drift of sodium and rubidium in noble gases have clearly reproduced this phenomenon of optical pumping in a bright state [6]. Finally we are aware of modification in the saturation spectroscopy of sodium atoms reported in [7], that could be explained on the basis of the optical pumping mechanism here analyzed.…”

Section: Introductionmentioning

confidence: 53%

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Collision-enhanced resonance of laser-diode-excited Cs in a buffer gas

et al. 1993

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Section: Introductionmentioning

confidence: 53%

“…This follows from Eq. (6) for the peak height, Thus the fluorescence will have a resonance at x = 1/2 with half width [4 + 4 (0/u2i) + (r/u2i)2 +2 (0/ur2i) (3I'/A -1)]~. This width does depend on the intensity of the pump II, (oc 0 ), and on the pressure p through the dependence of the rate I'.…”

Section: Resultsmentioning

confidence: 99%

Collision-enhanced resonance of laser-diode-excited Cs in a buffer gas

et al. 1993

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“…Finally we note that the present rate equation model is easily extended to the case of LID of R b or Cs in a buffer gas by adopting the adiabatic (instead of the sudden) limit for fine-structure changing collisions. This is particulmly timely in view of the recent demonstration of LID for the case of R b [75], including separation of the ssRb and 87Rb isotopes [76, 771. This work is part of the research program of the Stichting voor Fundamenteel Onderzoek der Materie (POM), which is financially supported by the Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO).…”

Section: Discussionmentioning

confidence: 99%

Rate Equations for Light‐Induced Drift

Haverkort

Woerdman²

1990

Annalen der Physik

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We present a numerical model aiming a t a realistic description of light-induced drift of multilevel atoms in a buffer gas, specializing to case of Na atoms in a noble gas. The model is based on the optical Bloch equations in which the effect of collisions is inrorporated by introducing Keilson-Storer collision kernels. By marking a connection with kinetic theory all adjustable parameters may be fixed.

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“…To obtain the sticking time τ s , we have to solve non steady state equation (10) with the initial condition (15) and the boundary condition n 0 as x ∞, ( 1 6 ) where δ(x) is the delta function which describes a burst of photodesorbed atoms by the photographic flash at the capillary origin x = 0. By using a trivial solution, we find a solution n = n(x, t) that satisfies both the initial and the boundary conditions: (17) where A is some constant.…”

Section: Theoretical Considerationsmentioning

confidence: 99%

“…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.…”

Section: Introductionmentioning

confidence: 99%

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

Atutov

Plekhanov

2015

J. Exp. Theor. Phys.

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We present the results of a systematic study of Knudsen's flow of Rb atoms in cylindrical capillary cells coated with a polydimethylsiloxane (PDMS) compound. The purpose of the investigation is to deter mine the characterization of the coating in terms of the sticking probability and sticking time of Rb on the two types of coating of high and medium viscosities. We report the measurement of the sticking probability of a Rb atom to the coating equal to 4.3 × 10 -5 , which corresponds to the number of bounces 2.3 × 10 4 at room temperature. These parameters are the same for the two kinds of PDMS used. We find that at room temper ature, the respective sticking times for high viscosity and medium viscosity PDMS are 22 ± 3 μs and 49 ± 6 μs. These sticking times are about million times larger than the sticking time derived from the surface Rb atom adsorption energy and temperature of the coating. A tentative explanation of this surprising result is pro posed based on the bulk diffusion of the atoms that collide with the surface and penetrate inside the coating. The results can be important in many resonance cell experiments, such as the efficient magnetooptical trap ping of rare elements or radioactive isotopes and in experiments on the light induced drift effect.

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Optical piston in rubidium

Cited by 20 publications

References 12 publications

Collision-enhanced resonance of laser-diode-excited Cs in a buffer gas

Collision-enhanced resonance of laser-diode-excited Cs in a buffer gas

Rate Equations for Light‐Induced Drift

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

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