Active vortex sampling system for remote contactless survey of surfaces by laser-based field asymmetrical ion mobility spectrometer

Artem E. Akmalov; Alexander A. Chistyakov; Gennadii E. Kotkovskii; Alexei V. Sychev

doi:10.1117/12.2279011

5 October 2017 Active vortex sampling system for remote contactless survey of surfaces by laser-based field asymmetrical ion mobility spectrometer

Artem E. Akmalov, Alexander A. Chistyakov, Gennadii E. Kotkovskii, Alexei V. Sychev

Author Affiliations +

Proceedings Volume 10441, Counterterrorism, Crime Fighting, Forensics, and Surveillance Technologies; 1044105 (2017) https://doi.org/10.1117/12.2279011
Event: SPIE Security + Defence, 2017, Warsaw, Poland

Abstract

The ways for increasing the distance of non-contact sampling up to 40 cm for a field asymmetric ion mobility (FAIM) spectrometer are formulated and implemented by the use of laser desorption and active shaper of the vortex flow. Numerical modeling of air sampling flows was made and the sampling device for a laser–based FAIM spectrometer on the basis of high speed rotating impeller, located coaxial with the ion source, was designed. The dependence of trinitrotoluene vapors signal on the rotational speed and the optimization of the value of the sampling flow were obtained. The effective distance of sampling is increased up to 28 cm for trinitrotoluene vapors detection by a FAIM spectrometer with a rotating impeller. The distance is raised up to 40 cm using laser irradiation of traces of explosives. It is shown that efficient desorption of low-volatile explosives is achieved at laser intensity 10⁷ W / cm² , wavelength λ=266 nm, pulse energy about 1mJ and pulse frequency not less than 10 Hz under ambient conditions. The ways of optimization of internal gas flows of a FAIM spectrometer for the work at increased sampling distances are discussed.

Citation Download Citation

Artem E. Akmalov, Artem E. Akmalov, Alexander A. Chistyakov, Alexander A. Chistyakov, Gennadii E. Kotkovskii, Gennadii E. Kotkovskii, Alexei V. Sychev, Alexei V. Sychev, } "Active vortex sampling system for remote contactless survey of surfaces by laser-based field asymmetrical ion mobility spectrometer ", Proc. SPIE 10441, Counterterrorism, Crime Fighting, Forensics, and Surveillance Technologies, 1044105 (5 October 2017); doi: 10.1117/12.2279011; https://doi.org/10.1117/12.2279011

ACCESS THE FULL ARTICLE

PERSONAL SIGN IN
Full access may be available with your subscription

Email or Username Forgot your username?

Password Forgot your password?

Show

Remember Email/Username on this computer

Remember Password

No SPIE account? Create an account
or Institutional Sign In via Shibboleth

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $14.40

Non-members: $18.00 ADD TO CART

Keywords/Phrases

Search In:

Publication Years