Fast Neutron Scattering Analysis - University of Cape Town

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fast neutrons in, fast neutrons out (fast neutron transmission spectroscopy) fast “white” neutron beam n transmitted neutrons 10 ENDF/B-VI 1 H Scattering cross section (b) 8 6 4 12 C 14 N 16 O Neutron beam transmitted through the sample is attenuated according to total scattering cross section for each element. 2 0 0 5 10 15 Incident neutron energy (MeV)
Neutrons in, neutrons out fast neutrons n, n’ Elastically and inelastically scattered neutrons The energy and intensity distributions of the scattered neutron field are functions of the: • incident neutron energy • angle of scattering • mass of the scattering nuclide
Page 1: Contraband detection, using neutron
Page 5 and 6: Bombing of Pan Am Flight 103 (Boein
Page 7 and 8: Common approaches to detect hidden
Page 9 and 10: Oxygen concentration (moles cm -3 )
Page 11 and 12: Neutron - based interrogation metho
Page 13 and 14: Thermal neutron capture thermal neu
Page 15: Fast neutron inelastic scattering m
Page 19 and 20: National Accelerator Centre, near C
Page 21 and 22: 1500 mm 300 mm 600 mm 400 mm 310 mm
Page 23 and 24: Pulse height (L) channel 60 40 20 0
Page 27 and 28: θ lab : 150 o 45 o Parameter: Puls
Page 29 and 30: Scattering signatures measured for
Page 31 and 32: The sensitivity of the approach for
Page 33 and 34: P x (x,k) represents the degree to
Page 35 and 36: Ammonium Nitrate Composition B Comp
Page 37 and 38: A group probability function indica
Page 39 and 40: Location of contraband in FNSA meas
Page 41 and 42: Results from a Rotational-Translati
Page 43 and 44: Detection of explosives in airline
Page 46 and 47: Detection of illicit drugs in airli
Page 48 and 49: FNSA screening times per suspect it

Fast Neutron Scattering Analysis - University of Cape Town

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