Photoatomic effect: Light-induced ejection of Na and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Na</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>from polydimethylsiloxane surfaces

Xu, Jianhe; Gozzini, A.; Mango, F.; Alzetta, G.; Bernheim, R. A.

doi:10.1103/physreva.54.3146

Cited by 41 publications

(39 citation statements)

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“…When these cells are then exposed to light of sufficiently short wavelength, alkali atoms are desorbed from the paraffin coating into the volume of the cell [24]. This phenomenon, known as light-induced atomic desorption (LIAD), has been observed using a wide range of surfaces: sapphire [40,41,42], silane-coated glass (in particular polydimethylsiloxane) [43,44,45,46,47], superfluid 4 He films [48,49], quartz [50], and porous silica [51]. LIAD is useful as a method for the rapid control of atomic density, and is of particular interest in the development of miniaturized atomic clocks and magnetometers [16].…”

Section: Relaxation Of Atomic Polarization In the Presence Of LImentioning

confidence: 99%

Relaxation of atomic polarization in paraffin-coated cesium vapor cells

et al. 2005

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The relaxation of atomic polarization in buffer-gas-free, paraffin-coated cesium vapor cells is studied using a variation on Franzen's technique of "relaxation in the dark" [Franzen, Phys. Rev. 115, 850 (1959)]. In the present experiment, narrow-band, circularly polarized pump light, resonant with the Cs D2 transition, orients atoms along a longitudinal magnetic field, and time-dependent optical rotation of linearly polarized probe light is measured to determine the relaxation rates of the atomic orientation of a particular hyperfine level. The change in relaxation rates during lightinduced atomic desorption (LIAD) is studied. No significant change in the spin relaxation rate during LIAD is found beyond that expected from the faster rate of spin-exchange collisions due to the increase in Cs density.

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Section: Relaxation Of Atomic Polarization In the Presence Of LImentioning

confidence: 99%

Relaxation of atomic polarization in paraffin-coated cesium vapor cells

et al. 2005

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“…It is noted that LIAD in vapor cells was first observed for silane coatings (in particular, polydimethylsiloxane) on cell walls in the early 90s [19], and since then there have been many investigations [20][21][22][23] including desorption from a paraffin coating [24]. In this paper we do not discuss LIAD from polymer coatings, because its mechanism is probably different from the desorption from bare glass surfaces.…”

Section: Introductionmentioning

confidence: 99%

Classification of Light-Induced Desorption of Alkali Atoms in Glass Cells Used in Atomic Physics Experiments

Hatakeyama

Wilde

Fukutani

2006

e-J. Surf. Sci. Nanotechnol.

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We attempt to provide physical interpretations of light-induced desorption phenomena that have recently been observed for alkali atoms on glass surfaces of alkali vapor cells used in atomic physics experiments. We find that the observed desorption phenomena are closely related to recent studies in surface science, and can probably be understood in the context of these results. If classified in terms of the photon-energy dependence, the coverage and the bonding state of the alkali adsorbates, the phenomena fall into two categories: It appears very likely that the neutralization of isolated ionic adsorbates by photo-excited electron transfer from the substrate is the origin of the desorption induced by ultraviolet light in ultrahigh vacuum cells. The desorption observed in low temperature cells, on the other hand, which is resonantly dependent on photon energy in the visible light range, is quite similar to light-induced desorption stimulated by localized electronic excitation on metallic aggregates. More detailed studies of light-induced desorption events from surfaces well characterized with respect to alkali coverage-dependent ionicity and aggregate morphology appear highly desirable for the development of more efficient alkali atom sources suitable to improve a variety of atomic physics experiments.

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“…In particular, Xu et al [5] consider the adsorption process of Na from PDMS. They claim that the oxygen atoms in the PDMS backbone can serve to stabilize the Na + by complexation.…”

Section: Light-induced Charge Transfermentioning

confidence: 99%

“…A theory takes into account a chemical process (chemisorption) in order to explain the LIAD, at least for the silanes coatings [5,41]. In particular, Xu et al [5] consider the adsorption process of Na from PDMS.…”

Section: Light-induced Charge Transfermentioning

confidence: 99%

“…In this experiment, photodesorption of Rb atoms from PDMS was measured as a function of the desorbing light intensity and frequency, and the acronym LIAD (Light Induced Atomic Desorption) was introduced [4]. In 1996, the photodesorption of Na and Na 2 from PDMS was demonstrated and suggested a tentative interpretation of LIAD at microscopic scale along with a first theoretical model [5]. After these pioneer works, LIAD has been extensively investigated with a growing interest both as a tool to obtain a deeper insight into surface/atom interaction and as a technique for numerous applications.…”

Section: Introductionmentioning

confidence: 99%

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Low Energy Atomic Photodesorption from Organic Coatings

et al. 2016

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Organic coatings have been widely used in atomic physics during the last 50 years because of their mechanical properties, allowing preservation of atomic spins after collisions. Nevertheless, this did not produce detailed insight into the characteristics of the coatings and their dynamical interaction with atomic vapors. This has changed since the 1990s, when their adsorption and desorption properties triggered a renewed interest in organic coatings. In particular, a novel class of phenomena produced by non-destructive light-induced desorption of atoms embedded in the coating surface was observed and later applied in different fields. Nowadays, low energy non-resonant atomic photodesorption from organic coatings can be considered an almost standard technique whenever large densities of atomic vapors or fast modulation of their concentration are required. In this paper, we review the steps that led to this widespread diffusion, from the preliminary observations to some of the most recent applications in fundamental and applied physics.

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Photoatomic effect: Light-induced ejection of Na andNa2from polydimethylsiloxane surfaces

Cited by 41 publications

References 5 publications

Relaxation of atomic polarization in paraffin-coated cesium vapor cells

Relaxation of atomic polarization in paraffin-coated cesium vapor cells

Classification of Light-Induced Desorption of Alkali Atoms in Glass Cells Used in Atomic Physics Experiments

Low Energy Atomic Photodesorption from Organic Coatings

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