Investigation on the Exploitation of Spectroscopic Capabilities of Radiation Portal Monitors Based on Plastic Scintillator Detectors

摘要

Although plastic scintillators used in Radiation Portal Monitors have largest detection efficiency forrngamma radiation, they suffer an extremely poor resolution and are as such incapable to identify the radiationrnsource characteristics. In this paper we explore the potential of a spectrum deconvolution technique based onrninverse response matrix generated with Monte Carlo calculation for post-processing the detected signals inrnRadiation Portal Monitors. This can enhance the spectroscopic capability of plastic scintillators and allow anrnimproved categorization (or even identification) of the source characteristics. The deconvolution methodologyrnhas been established firstly with synthetic spectra using Monte Carlo simulations, and then secondly withrnmeasured spectra currently collected at the JRC RPM in Ispra.