TY - JOUR
T1 - Proof of principle of a high-spatial-resolution, resonant-response γ-ray detector for Gamma Resonance Absorptionin 14N
AU - Brandis, M.
AU - Goldberg, M. B.
AU - Vartsky, D.
AU - Friedman, E.
AU - Kreslo, I.
AU - Mardor, I.
AU - Dangendorf, V.
AU - Levi, S.
AU - Mor, I.
AU - Bar, D.
PY - 2011/2
Y1 - 2011/2
N2 - The development of a mm-spatial-resolution, resonant-response detector based on a micrometric glass capillary array filled with liquid scintillator is described. This detector was developed for Gamma Resonance Absorption (GRA) in 14N. GRA is an automatic-decision radiographic screening technique that combines high radiation penetration (the probe is a 9.17 MeV γ-ray) with very good sensitivity and specificity to nitrogenous explosives. Detailed simulation of the detector response to electrons and protons generated by the 9.17 MeV γ-rays was followed by a proof-of-principle experiment, using a mixed γ-ray and neutron source. Towards this, a prototype capillary detector was assembled, including the associated filling and readout systems. Simulations and experimental results indeed show that proton tracks are distinguishable from electron tracks at relevant energies, based on a criterion that combines track length and light intensity per unit length.
AB - The development of a mm-spatial-resolution, resonant-response detector based on a micrometric glass capillary array filled with liquid scintillator is described. This detector was developed for Gamma Resonance Absorption (GRA) in 14N. GRA is an automatic-decision radiographic screening technique that combines high radiation penetration (the probe is a 9.17 MeV γ-ray) with very good sensitivity and specificity to nitrogenous explosives. Detailed simulation of the detector response to electrons and protons generated by the 9.17 MeV γ-rays was followed by a proof-of-principle experiment, using a mixed γ-ray and neutron source. Towards this, a prototype capillary detector was assembled, including the associated filling and readout systems. Simulations and experimental results indeed show that proton tracks are distinguishable from electron tracks at relevant energies, based on a criterion that combines track length and light intensity per unit length.
KW - Detection of explosives
KW - Inspection with gamma rays
UR - http://www.scopus.com/inward/record.url?scp=79952668324&partnerID=8YFLogxK
U2 - 10.1088/1748-0221/6/02/P02008
DO - 10.1088/1748-0221/6/02/P02008
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AN - SCOPUS:79952668324
SN - 1748-0221
VL - 6
JO - Journal of Instrumentation
JF - Journal of Instrumentation
IS - 2
M1 - P02008
ER -