• UV effect on etching parameters and activation energy of CR-39 plastic detector

    • Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      CR-39 detector; UV radiation; alpha-particles; bulk etch rate; track etch rate; activation energy.

    • Abstract


      An investigation has been made relating the effect of UV radiations on etching parameters and activation energy of CR-39 (solid-state nuclear track detectors, (SSNTDs)). Corresponding changes in bulk etch rate (BER) (V$_B$), track etch rate (TER) (V$_T$), sensitivity (S), critical angle (θ$_C$) and efficiency (η) due to pre-irradiation and post-irradiation on CR-39 polycarbonate plastic detector have been reported and discussed in detail. Both bulk activation energy (BAE) (E$_B$) and track activation energy (TAE) (E$_T$) are reported to decrease with post-irradiationand are explained based on chain degradation, free radical formation, cross-linkage, chain scission and softening of the detector material. Further unusual decrease in BAE (E$_B$) and TAE (E$_T$) was observed for pre-irradiated CR-39 polycarbonate detectors, possibly due to the nature and density of the detector material.

    • Author Affiliations



      1. Department of Physics, Shaheed Rajguru College of Applied Sciences for Women, University of Delhi, New Delhi 110 096, India
      2. Department of Physics, Shobhit Institute of Engineering and Technology (Deemed to-be-University), Meerut 250 110, India
    • Dates

  • Pramana – Journal of Physics | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2022-2023 Indian Academy of Sciences, Bengaluru.