Material recognition using neutron/gamma interrogation with time tagged fission sources

Author

Fabris, Daniela ; Hao, Xin ; Lunardon, Marcello ; Moretto, Sandra ; Nebbia, Giancarlo ; Pesente, Silvia ; Stevanato, L. ; Viesti, Giuseppe ; Sajo-Bohus, Laszlo

Author_Institution

INFN Sezione di Padova, Padova, Italy

fYear

2009

fDate

7-10 June 2009

Firstpage

1

Lastpage

5

Abstract

Material recognition is studied by measuring simultaneously the transmission of neutron and gamma rays produced by a time-tagged ²⁵²Cf source. The possibility to derive direct signatures to identify light elements (C, N, O) by using the measured transmission versus neutron time of flight is demonstrated. The yield of the transmitted gamma ray as a function of energy in the range 0.1-5.5 MeV provides high precision identification of the atomic number of the sample. A tomography system, currently under construction, is described.

Keywords

fission products; gamma-ray absorption; gamma-ray production; gamma-ray spectra; neutron absorption; neutron sources; neutron spectra; nondestructive testing; radioactive sources; atomic number; electron volt energy 0.1 MeV to 5.5 MeV; gamma interrogation; gamma-ray transmission; light element identification; material recognition; neutron interrogation; neutron time of flight; neutron transmission; time tagged ²⁵²Cf source; time tagged fission sources; tomography system; transmitted gamma-ray yield; Atomic measurements; Collimators; Electromagnetic wave absorption; Energy measurement; Gamma ray detection; Gamma ray detectors; Gamma rays; Neutrons; Time measurement; Tomography; ²⁵²Cf fission source; Non-destructive assay; gamma-ray spectra; neutron time of flight measurements; neutron-gamma transmission;

fLanguage

English

Publisher

ieee

Conference_Titel

Advancements in Nuclear Instrumentation Measurement Methods and their Applications (ANIMMA), 2009 First International Conference on

Conference_Location

Marseille

Print_ISBN

978-1-4244-5207-1

Electronic_ISBN

978-1-4244-5208-8

Type

conf

DOI

10.1109/ANIMMA.2009.5503657

Filename

5503657