MONTE-CARLO SIMULATION OF THE RESPONSE OF NAI SCINTILLATOR TO MEDIUM-ENERGY NEUTRONS

Citation
Pp. Dunphy et al., MONTE-CARLO SIMULATION OF THE RESPONSE OF NAI SCINTILLATOR TO MEDIUM-ENERGY NEUTRONS, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 330(1-2), 1993, pp. 199-209
Citations number
13
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
ISSN journal
01689002
Volume
330
Issue
1-2
Year of publication
1993
Pages
199 - 209
Database
ISI
SICI code
0168-9002(1993)330:1-2<199:MSOTRO>2.0.ZU;2-P
Abstract
A layered NaI scintillation detector (total thickness = 30.6 cm) was e xposed to tagged neutrons at the Los Alamos Meson Physics Facilty. The neutrons were approximately monoenergetic at ten energies in the rang e 36-709 MeV. The energy loss of the neutrons in the detector was subs equently simulated using a Monte Carlo program, which incorporated the HETC, EGS, and MORSE computer codes. The agreement between the experi ment and the simulation for the detection efficiency was within 35%. A comparison of the measured and calculated energy-loss spectra showed differences generally within 50%. Details of the detector geometry, th e Monte Carlo simulation, and the comparison of the data and the simul ation are presented.