X-ray fluorescence in some rare earth and high Z elements excited by 661.6 keV γ-rays |
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Authors: | T Yashoda S Krishnaveni Shivalinge Gowda TK Umesh Ramakrishna Gowda |
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Institution: | (1) Department of Studies in Physics, University of Mysore, 570 006 Manasagangotri, Mysore, India |
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Abstract: | The K-shell X-ray fluorescence cross sections are determined experimentally for 10 elements such as Pb, Hg, Ir, W, Lu, Tm,
Dy, Tb, Gd and Nd at excitation energy of 661.6 keV associated with γ-rays of 137Cs radioisotope. The technique employed involves the measurement of total intensity of fluorescent K X-rays that follow the
photoeffect absorption of a known flux of γ-rays using a well type Nal(Tl) detector. The obtained results are compared with the available theoretical values and other
measured values. |
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Keywords: | Photoeffect X-ray fluorescence cross section K-shell fluorescence yield |
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