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    Forensic and security applications of a long-wavelength dispersive Raman system

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    Publication date
    2015
    Author
    Ali, Esam M.A.
    Edwards, Howell G.M.
    Cox, R.
    Keyword
    Forensic
    ; Dispersive near-ir raman
    ; 1064nm
    ; Drugs of abuse
    ; Explosives
    ; Explosive materials
    ; In-situ
    ; Cocaine hydrochloride
    ; Spectroscopy
    ; Identification
    ; Spectrometer
    ; Environment
    ; Excitation
    ; Detector
    Peer-Reviewed
    Yes
    
    Metadata
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    Abstract
    A novel dispersive system operating at 1064-nm excitation and coupled with transfer electron InGaAs photocathode and electron bombardment CCD technology has been evaluated for the analysis of drugs of abuse and explosives. By employing near-IR excitation at 1064-nm excitation wavelength has resulted in a significant damping of the fluorescence emission compared to 785-nm wavelength excitation. Spectra of street samples of drugs of abuse and plastic explosives, which usually fluoresce with 785-nm excitation, are readily obtained in situ within seconds through plastic packaging and glass containers using highly innovative detector architecture based upon a transfer electron (TE) photocathode and electron bombarded gain (EB) technology that allowed the detection of NIR radiation at 1064nm without fluorescence interference. This dispersive near-IR Raman system has the potential to be an integral part in the armoury of the forensic analyst as a non-destructive tool for the in-situ analysis of drugs of abuse and explosives. Copyright (c) 2015 John Wiley & Sons, Ltd.
    URI
    http://hdl.handle.net/10454/9304
    Version
    No full-text available in the repository
    Citation
    Ali EMA, Edwards HGM and Cox R (2015) Forensic and security applications of a long-wavelength dispersive Raman system. Journal of Raman Spectroscopy. 46(3): 322-326.
    Link to publisher’s version
    http://dx.doi.org/10.1002/jrs.4632
    Type
    Article
    Collections
    Life Sciences Publications

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