Modification of optical, chemical and structural response of CR-39 polymer by 50 MeV lithium ion irradiation

摘要

CR-39 polymer samples were irradiated with 50 MeV lithium ion beam; the fluence was varied in the range 10(11)-10(13) ions cm(-2). Irradiation effects were studied using UV-visible, FTIR spectroscopic and X-ray diffraction techniques. The observation of the recorded spectra shows that the detector is sensitive to swift ions irradiation and its UV absorption is influenced by the stopping power (dE/dx)(e). The FTIR spectra does not show any considerable changes due to the irradiation indicating that the detector is chemically stable. No appreciable change in the diffraction pattern of CR-39 polymer after irradiation upto the fluence level of 10(13) ions cm(-2) is observed, showing its structural stability also. (C) 2001 Elsevier Science Ltd. All rights reserved. [References: 14]