Title: Characterization of chemical and optical modifications induced by proton beams in CR-39 detectors
Abstract: Chemical and optical modifications induced by 22.5MeV protons slowed down into a 4.4mm polyallyl diglycol carbonate (CR-39) stack, which was composed of 16 detectors of different thicknesses, are studied. Irradiation was performed perpendicular to the stack surface, in a vacuum chamber, with proton fluences ranging from 1011 to 1014 particles/cm2. These transformations are analyzed using fourier transform infrared (FTIR) absorption spectroscopy in the total attenuation reflection mode and UV–visible spectroscopy by following CO, CC and O–H bands evolution and by following the shift in the absorption edge towards the higher wavelengths. The chemical changes occurring in the CR-39 absorption spectra (both FTIR and UV) are analyzed versus the ion beam fluence, the beam penetration depth into the stack and the average deposited energy density. The results show that degradation of CR-39 presents a maximum in the depths ranging between 3500 and 4000μm.
Publication Year: 2003
Publication Date: 2003-06-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 76
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot