Measurement of L shell X-ray production and average L shell fluorescence yields for some heavy elements at 123.6 keV


APAYDIN G., Aylikci V., KAYA N., Cengiz E., TIRAŞOĞLU E.

ACTA PHYSICA POLONICA A, vol.113, no.6, pp.1629-1638, 2008 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 113 Issue: 6
  • Publication Date: 2008
  • Doi Number: 10.12693/aphyspola.113.1629
  • Title of Journal : ACTA PHYSICA POLONICA A
  • Page Numbers: pp.1629-1638

Abstract

The L-3l, L-3 alpha, L-3 beta, L-2 beta, L-2 gamma, L-2 eta, L-1 beta and Li gamma X-ray production cross-sections and L shell average fluorescence yields were measured for the elements from Re to U using excitation energy of 123.6 keV. Measurements were performed using an Co-57 annular radioactive source and a Si(Li) detector. The theoretical values of the cross-sections were calculated using theoretically tabulated values of subshell photoionization cross-sections; the Coster-Kronig transition probabilities were based on the Dirac-Hartree-Slater theory and radiative emission rates. Experimental results were compared with the theoretically calculated values of L shell X-ray cross-sections. The present experimental results are in agreement with theoretical values.