Laser desorption studies using laser-induced fluorescence of large aromatic molecules

被引：3

作者：

Smith, G. P. ^{[1
]}

Krancevic, B. ^{[1
]}

Huestis, D. L. ^{[1
]}

Oser, H. ^{[1
]}

机构：

[1] SRI Int, Mol Phys Lab, Menlo Pk, CA 94025 USA

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 2009年 / 94卷 / 01期

关键词：

68; 43; Vx; 79; 20; Ds; 44; 35; +c; REMOTE DETECTION; IONIZATION; FRAGMENTATION; SPECTROSCOPY; FEMTOSECOND; TEMPERATURE; EXPLOSIVES; FILMS;

D O I：

10.1007/s00340-008-3295-9

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Pulsed laser desorption of non-volatile organic dye molecules paraterphenyl and tetra-t-butyl-p-quinquephenyl (QUI) was studied using gas phase ultraviolet laser induced fluorescence, following heating of a steel substrate by a pulsed 1.06-mu m Nd:YAG laser. The fluorescence signal intensity is linear in concentration up to at least 30 monolayers and shows infrared power threshold behavior, as expected for evaporation, at similar to 0.2 J/cm(2). Similar signal levels were also observed in air, with 532-nm heating, and using other metallic or dark black surfaces.

引用

页码：127 / 132

页数：6

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