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      https://www.ias.ac.in/article/fulltext/pram/018/06/0485-0494

    • Keywords

       

      Photoelectric cross-section; extrapolation technique

    • Abstract

       

      Total photon mass attenuation coefficients in C, Al, S, Ti, B2O3, LiF, ZnO, Y2O3 and H8O2C5 (perspex) are measured on a good geometry set-up using proportional counter, Si(Li) and Ge(Li) detecting systems in the energy region from 6.47 to 52.014 keV employing x-rays and gamma rays from radioactive sources. The deduced photoelectric cross-sections are found to agree with the theoretical values of Storm and Israel, Scofield and semiexperimental values of Veigele wherever available within a few percent. The photo-electric cross-sections in elements, S, Ti and Y at their respectiveK-edges obtained by extrapolation technique agree with the theoretical values of Storm and Israel and Scofield at the respectiveK-edges except in S. In the case of S both the theoretical values atK-edges are found to be underestimations, more in the case of Scofield evaluations.

    • Author Affiliations

       

      K S R Sarma1 2 K L Narasimham1 K Premchand1 S Bhuloka Reddy1 K Parthasaradhi1 3 V Lakshminarayana1 4

      1. Laboratories for Nuclear Research, Andhra University, Waltair, Visakhapatnam - 530 003, India
      2. Government College, Khammam, India
      3. Cyclotron Institute, Texas A & M University, Texas, USA
      4. Physics Department, National University of Singapore, Singapore
    • Dates

       
  • Pramana – Journal of Physics | News

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