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Raman and time-resolved pulsed photoacoustic spectroscopy of solid trinitrotoluene in graphite mixture: For identification of double resonant optical phonon signatures

文献类型：期刊论文

作者K.S.Rao; A.K.Chaudhary
刊名Optics and Laser Technology
出版日期2019
卷号109页码:149-156
关键词Raman spectra,Trinitrotoluene,Graphite,Photoacoustic spectrum,energetic materials,tnt,explosives,laser,disorder,sensor,mode,Optics,Physics
ISSN号0030-3992
DOI10.1016/j.optlastec.2018.08.001
英文摘要The optical phonon waves transfer mechanism between pure graphite (GP) and trinitrotoluene (TNT) using 1064 nm as an excitation wavelength based on the double resonant Raman effect and the pulsed photoacoustic (PA) technique has been investigated. The study was carried out at a different weight percentage of GP within TNT with respect to the two excitation wavelengths of 532 nm and 1064 nm (30 ps, 10 Hz, Q-switched Nd: YAG laser). The equal and double proportional matrix of the GP and TNT (solid samples) generate a strong PA signal with high quality factor (Q-factor) due to the interaction of optical phonons of GP and TNT in the same phase. The Raman spectra, recorded at 785 nm wavelength provides an insight on the pi-electron coupling between the GP and TNT. The obtained experimental results confirm that the pure GP and its derivatives, which have a SP2/SP3 hybridization, can be used to develop a new sensing optode for the detection and identification of explosive molecules in the visible and near-IR wavelengths range.
语种英语
源URL[http://ir.ciomp.ac.cn/handle/181722/63101]  
专题中国科学院长春光学精密机械与物理研究所
推荐引用方式
GB/T 7714		 K.S.Rao,A.K.Chaudhary. Raman and time-resolved pulsed photoacoustic spectroscopy of solid trinitrotoluene in graphite mixture: For identification of double resonant optical phonon signatures[J]. Optics and Laser Technology,2019,109:149-156.
APA K.S.Rao,&A.K.Chaudhary.(2019).Raman and time-resolved pulsed photoacoustic spectroscopy of solid trinitrotoluene in graphite mixture: For identification of double resonant optical phonon signatures.Optics and Laser Technology,109,149-156.
MLA K.S.Rao,et al."Raman and time-resolved pulsed photoacoustic spectroscopy of solid trinitrotoluene in graphite mixture: For identification of double resonant optical phonon signatures".Optics and Laser Technology 109(2019):149-156.

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来源：长春光学精密机械与物理研究所

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