title: Detection of buried explosives using portable neutron sources with nanosecond timing.
abstract: Significant reduction of time needed to identify hidden explosives and other hazardous materials by the "neutron in, gamma out" method has been achieved by introducing timed (nanosecond) neutron sources-the so-called nanosecond neutron analysis technique. Prototype mobile device for explosives' detection based on a timed (nanosecond) isotopic (252)Cf neutron source has been created. The prototype is capable of identifying 400 g of hidden explosives in 10 min. Tests have been also made with a prototype device using timed (nanosecond) neutron source based on a portable D-T neutron generator with built-in segmented detector of accompanying alpha-particles. The presently achieved intensity of the neutron generator is 5x10(7)n/s into 4pi, with over 10(6) of these neutrons being correlated with alpha-particles detected by the built-in alpha-particle detector. Results of measurements with an anti-personnel landmine imitator are presented.
authors.affiliation: V.G.Khlopin Radium Institute, 28, 2nd Murinsky pr., Saint-Petersburg 194021, Russia. apl@atom.nw.ru
authors.forename: A V
authors.initials: AV
authors.lastname: Kuznetsov
authors.forename: A V
authors.initials: AV
authors.lastname: Evsenin
authors.forename: I Yu
authors.initials: IY
authors.lastname: Gorshkov
authors.forename: O I
authors.initials: OI
authors.lastname: Osetrov
authors.forename: D N
authors.initials: DN
authors.lastname: Vakhtin
mesh_terms: D001753:Blast Injuries / Q000517:prevention & control*; D005107:Explosions / Q000517:prevention & control*; D005720:Gamma Rays; D009502:Neutrons; D012680:Sensitivity and Specificity; D012987:Soil; D013051:Spectrometry, Gamma / Q000295:instrumentation* / Q000379:methods; D014857:Warfare
chemical_list: D012987:Soil