Desorption of Rb and Cs from PDMS induced by non resonant light scattering
Università di Siena, Dipartimento di Fisica, Via Roma 56, 53100 Siena, Italy
2 Università di Trieste, Dipartimento di Fisica, via A. Valerio 2, 34127 Trieste, Italy
Corresponding author: a email@example.com
Published online: 22 November 2005
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.
PACS: 68.43.Tj – Photon stimulated desorption / 34.50.Dy – Interactions of atoms and molecules with surfaces; photon and electron emission; neutralization of ions
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2005