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. S. , CENGIZ E. , TIRAŞOĞLU E.

ACTA PHYSICA POLONICA A, cilt.113, ss.1629-1638, 2008 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 113 Konu: 6
  • Basım Tarihi: 2008
  • Doi Numarası: 10.12693/aphyspola.113.1629
  • Dergi Adı: ACTA PHYSICA POLONICA A
  • Sayfa Sayıları: ss.1629-1638

Özet

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.