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NEUTRON INTERROGATION
Traditional Technologies
- TNA - thermal neutron activation
- sensitivity only to nitrogen
concentration in explosives
- poor background discrimination
- slow in acquiring spectra
- FNA - fast neutron activation
- sensitive to all elements in
a plastic explosive
- identification of chemical compound
possible
- background discrimination difficult
- slow in acquiring spectra
- PFNA - pulsed fast neutron analysis
- very short pulse neutron TOF
to give spatial information
- identification of chemical compound
possible
- excellent background discrimination
- slow in acquiring spectra
New Technology
- TINA - tomographic interrogation
by neutron activation
- similar to PFNA except
- single high flux neutron pulse
activation
- no spectra building process
- identification of predefined
materials
TINA
Numerical studies
Detailed MCNP neutron interrogation
study
- simulation of different ground environments
- simulation of different explosives
- evaluation of minimum neutron dose
possible
- optimization of detector and source
geometry
- evaluation of shielding requirement
- evaluation of neutron source design
MCNP Simulations more
(next
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