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, vol.60, pp.11-16, 2001 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 60
  • Publication Date: 2001
  • Doi Number: 10.1016/s0969-806x(00)00328-5
  • Journal Name: RADIATION PHYSICS AND CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.11-16
  • Karadeniz Technical University Affiliated: Yes

Abstract

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.