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SEL Number: 07ED-01-LASR
Title: Detector, Explosive, Laser-Based


Last Updated: 6/23/2022 3:47:32 PM

Previous SEL Number: 07ED-01-LASR

Description: A transportable or handheld detector that utilizes Laser spectroscopy (e.g. Raman) and spectral analysis to detect explosive material. These detectors may also have chemical and even biological capability when equipped with appropriate spectral libraries. See Item 07CD-01-DPRS.
DIQCode: [D,I]

ImportantFeatures: Systems are available using a variety of wavelengths (785 nm, 830 nm, 1064 nm, etc.) and techniques (spatially offset Raman spectroscopy, surface enhanced Raman spectroscopy, etc.).
Spectral libraries are updatable, generally by the manufacturer.  Standardized libraries are available from Government sources, but they must be transformed for use with a specific instrument.
Products are generally ruggedized or transported in ruggedized cases.
Some units may have the ability to transmit results, or "reach back" for analytical information.

Operating Considerations: Warning: Laser glasses or a safety enclosure required with some products. Consult user manual for details

Warning: The intensity of some lasers and scan duration are sufficient to ignite some explosive compounds. Operators should use very small quanties, lower energy levels and countdown times on suspected energetic materials. Darker solids such as black power or silver azide are most susceptible to ignition. Do not measure suspected energetic materials on filter paper or other flammable bases. Exercise caution in explosive environments or with large samples. Use appropriate personal protective equipment when testing. Check manufacturer's web site periodically to obtain latest technical and safety bulletins. These devices may not be able to detect materials in concentrations of less than 10%: multiple measurements of the same sample or laser rastering technologies will improve results.

Evaluate library content prior to procurement, as the system will only be as useful as its library. 

May be unreliable at extreme high or low temperatures. Consult user manual for operating temperature limitations.
Raman is useful for solids and liquids, but generally has limited capability for vapors.
Consider type and availability of batteries.
Consider strengths and weaknesses of specific technologies, and utilize multiple technologies to increase confidence levels, e.g., FTIR to complement Raman.
When Raman is used with liquids, sample must either be decanted to a clear sampling container or must be in a sufficiently translucent container to allow laser penetration.
Additional expense may be involved in purchasing / maintaining spectra libraries.
ICostRating: $$$/$$$$
MCostRating: $$

Training Requirements: Core Training: NFPA
National Fire Protection Association
470 Chapter 8 or Chapter 10.
Initial Training: Moderate (1-2 days)
Sustainment Training: Minimal (<1 day)

Mandatory Standards:

Applicable Standards and References:


MSSL:
  • Law Enforcement: Bomb Squad
  • REL: Full Canadian Recommended Equipment List
  • REL: LOS-1, Multi-Agency Intervention
  • REL: LOS-2, Scout/Reconnaissance Mission
  • REL: LOS-3, Suspicious Powder Response