Light-induced sodium desorption from paraffin film

Year: 2008

Authors: Gozzini S., Lucchesini A., Marmugi L., Postorino G.

Autors Affiliation: Area Ric, Ist Proc Chim Fis Del Consiglio Nazl Delle Ric, I-56124 Pisa, Italy; Univ Pisa, Dipartimento Fis, I-56123 Pisa, Italy

Abstract: Sodium photoejection from a paraffin coated cell has been observed and analyzed in detail. The effect has been detected by observing the fluorescence induced by a cw dye laser. A maximum Na density of about 2.9 x 10(8) atoms/cm(3) was obtained by shining the cell with 1.05 W Ar+ laser green light. A progressive slowing of the dynamics of the process is reported, probably due to a change in the chemical rearrangement of the Na atoms in the coating under intense light exposure. This aging effect represents a limitation in the practical application of this kind of materials.


Volume: 47 (1)      Pages from: 1  to: 5

KeyWords: Polymers and organics; Physical properties of thin films; Photon stimulated desorption; Atomic desorption; Laser diode
DOI: 10.1140/epjd/e2008-00015-5

Citations: 20
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