title: 14N magnetic resonance for materials detection in the field.
abstract: Nitrogen is prevalent in many materials, both naturally occurring and man-made. In particular, it is found in many explosives and other contraband materials. One technique for the detection of such materials in the field is the use of the magnetic resonance signal from the nearly 100% abundant, spin-1, 14N nuclei. Some of the difficulties with such measurements in the field include spurious signals from acoustic resonances, radio-frequency interference, and generally low signal-to-noise ratios. A summary of recent work by the authors to help mitigate these difficulties is presented.
authors.affiliation: Department of Physics, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931-1295, USA. suits@mtu.edu
authors.forename: B H
authors.initials: BH
authors.lastname: Suits
authors.forename: A N
authors.initials: AN
authors.lastname: Garroway
authors.forename: J B
authors.initials: JB
authors.lastname: Miller
authors.forename: K L
authors.initials: KL
authors.lastname: Sauer
mesh_terms: D016477:Artifacts; D004867:Equipment Design / Q000379:methods*; D005107:Explosions / Q000517:prevention & control; D009682:Magnetic Resonance Spectroscopy / Q000295:instrumentation* / Q000379:methods*; D008422:Materials Testing / Q000379:methods*; D008904:Miniaturization / Q000295:instrumentation / Q000379:methods; D009584:Nitrogen / Q000032:analysis* / Q000737:chemistry*; D011786:Quality Control; D012637:Security Measures; D023481:Terrorism / Q000517:prevention & control
chemical_list: D009584:Nitrogen