Thumbnail
Access Restriction
Open

Author Sahoo, G. S. ♦ Joshi, D. S. ♦ Tripathy, S. P. ♦ Bandyopadhyay, T.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ♦ CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ ABSORBED RADIATION DOSES ♦ CARBON ♦ ELECTRON BEAMS ♦ ELECTRONS ♦ FOURIER TRANSFORM SPECTROMETERS ♦ INFRARED SPECTRA ♦ IRRADIATION ♦ MEV RANGE 01-10 ♦ NEUTRON DOSIMETRY ♦ OPACITY ♦ POLYMERS ♦ SENSITIVITY ♦ ULTRAVIOLET RADIATION ♦ ULTRAVIOLET SPECTRA
Abstract In this work, electron induced modifications on the bulk etch rate, structural and optical parameters of CR-39 polymer were studied using gravimetric, FTIR (Fourier Transform Infrared) and UV–vis (Ultraviolet–Visible) techniques, respectively. CR-39 samples were irradiated with 10 MeV electron beam for different durations to have the absorbed doses of 1, 10, 550, 5500, 16 500, and 55 000 kGy. From the FTIR analysis, the peak intensities at different bands were found to be changing with electron dose. A few peaks were observed to shift at high electron doses. From the UV-vis analysis, the optical band gaps for both direct and indirect transitions were found to be decreasing with the increase in electron dose whereas the opacity, number of carbon atoms in conjugation length, and the number of carbon atoms per cluster were found to be increasing. The bulk etch rate was observed to be increasing with the electron dose. The primary objective of this investigation was to study the response of CR-39 to high electron doses and to determine a suitable pre-irradiation condition. The results indicated that, the CR-39 pre-irradiated with electrons can have better sensitivity and thus can be potentially applied for neutron dosimetry.
ISSN 00218979
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-07-14
Publisher Place United States
Journal Journal of Applied Physics
Volume Number 120
Issue Number 2


Open content in new tab

   Open content in new tab