Light-induced atomic desorption from porous silica

Anno: 2004

Autori: Burchianti A., Marinelli C., Bogi A., Brewer J., Rubahn K.,

Rubahn H.-G., Della Valle F., Mariotti E., Biancalana V.,
Veronesi S., Moi L.

Affiliazione autori: INFM UdR di Siena, Dipartimento di Fisica, Università di Siena
via Roma 56, I-53100 Siena, Italy
Syddansk Universitet, Fysisk Institut – Campusvej 55, DK-5230 Odense M, Denmark
Dipartimento di Fisica, Università di Trieste – via A. Valerio 2, I-34127 Trieste, Italy

Abstract: Huge light-induced rubidium atom desorption has been observed from porous silica samples placed inside Pyrex cells kept at room temperature. The desorption rate and the maximum vapour density change have been measured as a function of the desorbing light intensity. Their values are comparable with those recently obtained in Pyrex cells coated with organic films. A linear dependence of the desorption rate and a square-root dependence of the maximum density increase on light intensity indicate that diffusion inside the glass pores is a key mechanism. The application of this effect to develop light-controlled atomic dispensers compatible with high vacuum environment is discussed.

Giornale/Rivista: EPL

Volume: 67 (6)      Da Pagina: 983  A: 989

Parole chiavi: Photodesorption; Nanostructured Materials; Film
DOI: 10.1209/epl/i2004-10141-6

Citazioni: 37
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-12
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