Laser-induced alkali atom desorption from thin sodium films on quartz prisms

被引：11

作者：

Brewer, J ^{[1
]}

Rubahn, HG ^{[1
]}

机构：

[1] Univ So Denmark, Inst Fys, DK-5230 Odense M, Denmark

来源：

CHEMICAL PHYSICS | 2004年 / 303卷 / 1-2期

关键词：

photo-desorption; alkali atoms; desorption dynamics;

D O I：

10.1016/j.chemphys.2004.04.020

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The dynamics of visible (lambda = 532 nm) and near-infrared (lambda = 1064 nm) laser-induced desorption of alkali atoms from thin metal films deposited on quartz prisms is investigated. Upon desorption the atoms show non-thermal kinetic energy distributions with mean kinetic energies of 24, 150 and 350 meV at 532 mn and 14 meV at 1064 nm, independent of laser fluence. The thresholds for the appearance of these contributions are 0, 50 and 110 mJ/cm(2), respectively. No threshold is observed for 1064 nm desorption. The results are discussed in terms of direct electronic versus multiphomon scattering assisted desorption. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：1 / 6

页数：6

共 15 条

[1] Light-induced desorption of alkali-metal atoms from paraffin coating [J].

Alexandrov, EB ;

Balabas, MV ;

Budker, D ;

English, D ;

Kimball, DF ;

Li, CH ;

Yashchuk, VV .

PHYSICAL REVIEW A, 2002, 66 (04) :12

[2] Light-induced diffusion and desorption of alkali metals in a siloxane film: Theory and experiment [J].

Atutov, SN ;

Biancalana, V ;

Bicchi, P ;

Marinelli, C ;

Mariotti, E ;

Meucci, M ;

Nagel, A ;

Nasyrov, KA ;

Rachini, S ;

Moi, L .

PHYSICAL REVIEW A, 1999, 60 (06) :4693-4700

[3] Photodesorption of Na atoms from rough Na surfaces [J].

Balzer, F ;

Gerlach, R ;

Manson, JR ;

Rubahn, HG .

JOURNAL OF CHEMICAL PHYSICS, 1997, 106 (19) :7995-8012

[4]

Bonch-Bruevich A. M., 1987, Soviet Physics - JETP, V65, P161

[5]

BREWER J, 2003, THESIS U SO DENMARK

[6] Laser ablation of metals: The transition from non-thermal processes to thermal evaporation [J].

Gotz, T ;

Bergt, M ;

Hoheisel, W ;

Trager, F ;

Stuke, M .

APPLIED SURFACE SCIENCE, 1996, 96-8 :280-286

[7] LIGHT-INDUCED EJECTION OF ALKALI ATOMS IN POLYSILOXANE COATED CELLS [J].

GOZZINI, A ;

MANGO, F ;

XU, JH ;

ALZETTA, G ;

MACCARRONE, F ;

BERNHEIM, RA .

NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA D-CONDENSED MATTER ATOMIC MOLECULAR AND CHEMICAL PHYSICS FLUIDS PLASMAS BIOPHYSICS, 1993, 15 (05) :709-722

[8] DESORPTION OF METAL ATOMS WITH LASER-LIGHT - MECHANISTIC STUDIES [J].