Desorption of Rb and Cs from PDMS induced by non resonant light scattering

Abstract.Simultaneous light-induced desorption of rubidium and cesium atoms has been observed in polydimethylsiloxane (PDMS) coated Pyrex cells at room temperature and at low light intensity. The two alkali atoms show the same dynamics and the same dependence on the desorbing light frequency. No competition in the free sites occupancy exists. An interpretation of the experimental results in terms of non-resonant light scattering from the PDMS coating is discussed.

[1]  J. H. de Boer,et al.  The dynamical character of adsorption , 1968 .

[2]  J. Camparo.  Alkali 〈I⋅S〉 wall relaxation in dichlorodimethylsilane coated resonance cells , 1987 .

[3]  D. F. Kimball,et al.  Erratum: Light-induced desorption of alkali-metal atoms from paraffin coating [Phys. Rev. A 66, 042903 (2002)] , 2004 .

[4]  R. F. Wallis,et al.  Ionic Raman Effect. II. The First-Order Ionic Raman Effect , 1971 .

[5]  Valeriy V. Yashchuk,et al.  Light-induced desorption of alkali-metal atoms from paraffin coating , 2002 .

[6]  H. Kreuzer,et al.  Desorption by phonon cascades for gas-solid systems with many physisorbed surface bound states , 1980 .

[7]  B. Jaduszliwer,et al.  Alkali reactions with wall coating materials used in atomic resonance cells , 1987 .

[8]  Valerio Biancalana,et al.  Fast and efficient loading of a Rb magneto-optical trap using light-induced atomic desorption , 2003 .

[9]  Emilio Mariotti,et al.  An efficient photo-atom source , 1997 .

[10]  Horst-Günter Rubahn,et al.  Light-induced atomic desorption from porous silica , 2004 .

[11]  Wu,et al.  Experimental determination of the rate constants for spin exchange between optically pumped K, Rb, and Cs atoms and 129Xe nuclei in alkali-metal-noble-gas van der Waals molecules. , 1985, Physical review. A, General physics.

[12]  Horst-Günter Rubahn,et al.  Pulsed laser desorption of alkali atoms from PDMS thin films , 2004 .

[13]  D. F. Kimball,et al.  Relaxation of atomic polarization in paraffin-coated cesium vapor cells (13 pages) , 2005 .

[14]  Valerio Biancalana,et al.  A new class of photo-induced phenomena in siloxane films , 2001 .

[15]  B. P. Anderson,et al.  Loading a vapor-cell magneto-optic trap using light-induced atom desorption , 2001 .

[16]  Silvia Gozzini,et al.  Light-induced potassium desorption from polydimethylsiloxane film , 2004 .

[17]  Emilio Mariotti,et al.  Light-Induced Atom Desorption , 1994 .

[18]  J. Brossel,et al.  Relaxation of Optically Pumped Rb Atoms on Paraffin-Coated Walls , 1966 .

[19]  Valerio Biancalana,et al.  Light-induced diffusion and desorption of alkali metals in a siloxane film: theory and experiment , 1999 .

[20]  S. Du,et al.  Atom-chip Bose-Einstein condensation in a portable vacuum cell (4 pages) , 2004 .

[21]  G. Alzetta,et al.  Light-induced ejection of alkali atoms in polysiloxane coated cells , 1993 .

[22]  Xu,et al.  Photoatomic effect: Light-induced ejection of Na and Na2 from polydimethylsiloxane surfaces. , 1996, Physical review. A, Atomic, molecular, and optical physics.

[23]  M. Allegrini,et al.  OBSERVATION OF THE REFLECTION OF LASER ORIENTED ATOMS BY NON DISORIENTING SURFACES , 1980 .