Examination of Energy Resolution of Track Detector LR-115 to Distinguish the Various Energies of Alpha Particles (1-4MeV) Using the Wblfit formula Fitting in Matlab Software

Abstract

This study aims to test energy resolution of the nuclear track detector LR-115 to distinguish the various energies of alpha particles (1-4MeV)that were obtained from radioactive isotope 241 Am.This method is based on the relationship between the energy deposited in the material by ionizing particles and the track developed after a well-established chemical process(NaOH,2.5N,60 o C). Solid state nuclear track detectors (SSNTD's) have been used successfully as detecting devices and as a passive system to detect alpha contamination on different surfaces. The resulted tracks are performed with a digital image analysis system (image processing) associated with a PC mathematical processor and the track diameter distribution fitted by wblfit formula. The mean track diameter (D) for each used energy, its width ∆D at full width at half maximum (FWHM)and energy resolution power (∆E/E)D were measured for each neighboring energies. The results of energy resolution of LR-115 were compared with results of another nuclear track detectors of similar studies at average energy (3.7 MeV).