Study of the K shell photoelectric parameters of Dy,Yb and W atoms using low energy bremsstrahlung radiation |
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Authors: | S B Hosur L R Naik N M Badiger |
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Institution: | (1) Department of Biology, University of Ljubljana, Večna pot 111, 1000 Ljubljana, Slovenia;(2) Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia;(3) University of Nova Gorica, Vipavska 13, 301, 5001 Nova Gorica, Slovenia;(4) Max-Planck-Institut fűr Kernphysik, 103980, 69029 Heidelberg, Germany |
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Abstract: | Low energy external bremsstrahlung (EB) photons were used to estimate the K shell photoelectric parameters; the K shell photoelectric
cross section at the K edge, the K shell binding energy, the K shell jump ratio, the K shell jump factors, the Davisson-Kirchner
ratio and the K shell oscillator strength for dysprosium (Dy), ytterbium (Yb) and tungsten (W) atoms. The EB photons are produced
in the nickel (Ni) target by using the beta particles from a weak beta source of 90Sr–90Y. These photons are made to fall on these elemental targets of our interest and the transmitted spectrum is measured using
GMX 10P HPGe detector coupled to an 8K multichannel analyzer. The sharp decrease at the K edge in the measured spectrum is
used to determine the K shell photoelectric parameters of these elements. The experimental results are in good agreement with
the theoretical values. |
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