Analysis of high-explosive samples by Fourier transform Raman spectroscopy

Akhavan, J.

doi:10.1016/0584-8539(91)80211-z

Cited by 50 publications

(26 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The Raman cross sections used for this analysis are the average values of the solution and solid measurements (where available) published in references. [61][62][63] For a 100 nm thick sample, the attenuation even at 229 nm is small, and the relative Raman signal closely follows the Raman cross section. However, a sample thickness or particle diameter this small is not likely to be encountered operationally.…”

Section: Fig 3 Raman Spectra Of Rdx In Different Solid Phases (Top mentioning

confidence: 88%

Recent Advances and Remaining Challenges for the Spectroscopic Detection of Explosive Threats

et al. 2014

View full text Add to dashboard Cite

In 2010, the U.S. Army initiated a program through the Edgewood Chemical Biological Center to identify viable spectroscopic signatures of explosives and initiate environmental persistence, fate, and transport studies for trace residues. These studies were ultimately designed to integrate these signatures into algorithms and experimentally evaluate sensor performance for explosives and precursor materials in existing chemical point and standoff detection systems. Accurate and validated optical cross sections and signatures are critical in benchmarking spectroscopic-based sensors. This program has provided important information for the scientists and engineers currently developing trace-detection solutions to the homemade explosive problem. With this information, the sensitivity of spectroscopic methods for explosives detection can now be quantitatively evaluated before the sensor is deployed and tested.

show abstract

Section: Fig 3 Raman Spectra Of Rdx In Different Solid Phases (Top mentioning

confidence: 88%

Recent Advances and Remaining Challenges for the Spectroscopic Detection of Explosive Threats

et al. 2014

View full text Add to dashboard Cite

show abstract

“…For example, Fourier-transform Raman spectroscopy was successfully applied for the detection of components of explosives in unknown Semtex samples. [22] Detection and identification of plastic explosives contained in fingerprint samples using Raman microscopy has been reported, [23] and a fibre-optic probe for the detection and identification of explosive materials has been developed allowing Raman spectra to be acquired remotely. [24,25] A preliminary study in our laboratory addressed the detection of a strictly limited range of explosive materials of potential interest to law-enforcement agencies.…”

Section: Introductionmentioning

confidence: 99%

Raman spectroscopy and security applications: the detection of explosives and precursors on clothing

Ali

Edwards

Scowen

2009

J Raman Spectroscopy

View full text Add to dashboard Cite

This study describes the application of confocal Raman microscopy to the detection and identification of explosives and their precursors in situ on undyed natural and synthetic fibres and coloured textile specimens. Raman spectra were obtained from explosives particles trapped between the fibres of the specimens. The explosives pentaerythritol tetranitrate (PETN), trinitrotoluene (TNT), and ammonium nitrate as well as the explosives precursors hexamethylenetetraamine (HMTA) and pentaerythritol were used in this study. Raman spectra were collected from explosives particles with maximum dimensions in the range 5-10 Î¼m. Despite the presence of spectral bands arising from the natural and synthetic polymers and dyed textiles, the explosive substances could be identified by their characteristic Raman bands. Furthermore, Raman spectra were obtained from explosives particles trapped between highly fluorescent clothing fibres. Raman spectra of the explosive and explosive precursor substances on dyed and undyed clothing substrates were readily obtained in situ within 90 s without sample preparation and with no alteration of the evidential material. Â© 2009 John Wiley & Sons, Ltd

show abstract

“…For example, Fourier transform (FT) Raman spectroscopy was successfully applied for the detection of explosive components in unknown Semtex samples. [27] In situ detection and identification of plastic explosives contained in fingerprint samples using Raman microscopy has been reported. [28] Also, a fiber optic probe for the detection and identification of explosive materials has been developed, which has allowed Raman spectra to be acquired remotely from a spectrometer.…”

Section: Introductionmentioning

confidence: 99%

Detection of explosives on human nail using confocal Raman microscopy

Ali

Edwards

Hargreaves

et al. 2008

J Raman Spectroscopy

View full text Add to dashboard Cite

Trace amounts of explosives were detected on human nail using confocal Raman microscopy. Contamination of the nail can result from the manual handling, packaging or transportation of explosive substances. Raman spectra were obtained from pentaerythritol tetranitrate (PETN), trinitrotoluene (TNT), ammonium nitrate and hexamethylenetetramine (HMTA) particles on the surface of the nail with dimensions in the range 5-10 Î¼m. An added difficulty in an analytical procedure is the presence of a nail varnish coating that has been applied, which traps the particulate matter between the coating and nail. Using confocal Raman microscopy, interference-free spectra could be acquired from particles of explosives visually masked by the nail varnish. Spectra of the explosives could be readily obtained in situ within 90 s without alteration of the evidential material. Acquisition of a Raman point map of a PETN particle under the nail varnish coating is also reported. Copyright Â© 2008 John Wiley & Sons, Ltd

show abstract

Analysis of high-explosive samples by Fourier transform Raman spectroscopy

Cited by 50 publications

References 4 publications

Recent Advances and Remaining Challenges for the Spectroscopic Detection of Explosive Threats

Recent Advances and Remaining Challenges for the Spectroscopic Detection of Explosive Threats

Raman spectroscopy and security applications: the detection of explosives and precursors on clothing

Detection of explosives on human nail using confocal Raman microscopy

Contact Info

Product

Resources

About