Measurements of L-l, L-alpha, L-eta, L-beta and L-gamma X-ray fluorescence cross-sections in 70 <= Z <= 92 elements excited by 59.543 keV photons


TIRASOGLU E. , Cevik U. , ERTUGRAL B., ATALAY Y., KOPYA A.

RADIATION PHYSICS AND CHEMISTRY, cilt.60, ss.11-16, 2001 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 60
  • Basım Tarihi: 2001
  • Doi Numarası: 10.1016/s0969-806x(00)00328-5
  • Dergi Adı: RADIATION PHYSICS AND CHEMISTRY
  • Sayfa Sayıları: ss.11-16

Özet

L-i, L-x, L-eta, L-beta and L-gamma X-ray fluorescence cross-sections have been measured for the elements Yb, Lu, W, Hg, Tl, Pb, Bi and U using excitation energy of 59.543 keV. Measurements have been performed using an Am-241 annular source and a Si(Li) detector. The experimental values of the cross-sections were determined by measuring the absolute yield of L subshell X-rays emitted from a standard target of a given element irradiated with photons of given energy. The theoretical values of the cross-sections were calculated using theoretically tabulated values of subshellphotoionization cross-sections, fluorescence yields, Coster-Kronig transition probabilities and radiative decay rates. Experimental results have been compared with the theoretically calculated values of L X-ray cross-sections. A fairly good agreement is obtained between the experimental and the calculated values. (C) 2001 Elsevier Science Ltd. All rights reserved.