Measurement of 14MeV neutron-induced prompt gamma-ray spectra.pdf

ARTICLE IN PRESS0969-8043/$ - se doi:10.1016/j.ap Correspond E-mail addrApplied Radiation and Isotopes 66 (2008) 421–434 /locate/apradisoMeasurement of 14MeV neutron-induced prompt gamma-ray spectra from 15 elements found in cargo containers B. Perota,, C. Carascoa, S. Bernarda, A. Mariania, J.-L. Szabob, G. Sannieb, V. Valkovicc, D. Sudacc, G. Viestid, M. Lunardond, C. Botossod, G. Nebbiad, S. Pesented, S. Morettod, A. Zenonie, A. Donzellae, M. Moszynskif, M. Gierlikf, W. Klamrag, P. Le Tourneurh, M. Lhuissierh, A. Colonnai, C. Tintorii, P. Peeranij, V. Sequeiraj, M. Salvatoj aCommissariat a? l’Energie Atomique, 13108 St Paul-lez-Durance, France bCommissariat a? l’Energie Atomique, 91191 Gif-Sur-Yvette, France cInstitute Ruder Boskovic, 54 Bijenicka c., 10000 Zagreb, Croatia dINFN and Universita? di Padova, Via Marzolo 8, I-35131 Padova, Italy eINFN and Universita? di Brescia, 38 Via Branze, 25123 Brescia, Italy fSoltan Institute for Nuclear Studies, PL 05-400 Otwock-Swierk, Poland gRoyal Institute of Technology, 10691 Stockholm, Sweden hEADS-SODERN, 20 Av. Descartes, 94451 Limeil-Bre?vannes Cedex, France iCAEN S.p.A., 11 Via Vetraia, 55049 Viareggio, Italy jEuropean Commission, Joint Research Centre, I-21020 Ispra, Italy Received 6 August 2007; received in revised form 29 November 2007; accepted 30 November 2007Abstract Within the EURopean Illicit TRAfficking Countermeasures Kit (EURITRACK) project, the gamma-ray spectra produced in a series of materials by 14-MeV tagged-neutron beams have been collected in the inspection portal equipped with large volume NaI(Tl) detectors, in order to build a database of signatures for various elements: C, N, O, Na, Al, Si, Cl, K, Ca, Cr, Fe, Ni, Cu, Zn, Pb. The measured spectra have been compared with prediction from Monte Carlo simulations to verify the consistency of the relevant nuclear data inputs. This library of measured 14-MeV neutron-induced gamma-ray spectra is currently used in a data processing algorithm to unfold t