Production of the NO photofragment in the desorption of RDX and HMX from surfaces

被引：12
作者：
White, Jason D. [1 ]
Akin, F. Ahu [1 ]
Oser, Harald [1 ]
Crosley, David R. [1 ]
机构：
[1] SRI Int, Mol Phys Lab, Menlo Pk, CA 94025 USA
来源：
APPLIED OPTICS | 2011年 / 50卷 / 01期
基金：
美国国家科学基金会;
关键词：
LASER-INDUCED FLUORESCENCE; FLIGHT MASS-SPECTROMETRY; FRAGMENT DETECTION SPECTROSCOPY; EXPLOSIVE-RELATED COMPOUNDS; MULTIPHOTON IONIZATION; FEMTOSECOND LASER; NITROAROMATIC MOLECULES; REMOTE DETECTION; UNIQUE SCHEME; EXCITED NO;
D O I：
10.1364/AO.50.000074
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A promising scheme for the remote detection of nitrate-based explosives, which have low vapor pressure, involves two lasers: the first to desorb, vaporize, and photofragment the explosive molecule and the second to create laser-induced fluorescence in the NO fragment. It is desirable to use for the first a powerful 532 nm frequency-doubled Nd:YAG laser. In this study, we investigate the degree of photofragmentation into NO resulting from the irradiation of the explosives RDX and HMX coated on a variety of surfaces. The desorption step is followed by femtosecond laser ionization and time-of-flight mass spectrometry to reveal the fragments produced in the first step. We find that modest laser power of 532 nm desorbs the explosive and produces adequate amounts of NO. (C) 2010 Optical Society of America
引用
收藏
页码：74 / 81
页数：8
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