Measurement of LI, L alpha, L beta and L gamma X-ray fluorescence cross-sections in heavy elements excited by 59.5 and 123.6 keV photons

DOĞAN O., Simsek O., Turgut U., Ertugrul M.

PHYSICA SCRIPTA, cilt.56, sa.6, ss.580-583, 1997 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 56 Sayı: 6
  • Basım Tarihi: 1997
  • Doi Numarası: 10.1088/0031-8949/56/6/007
  • Dergi Adı: PHYSICA SCRIPTA
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.580-583
  • Atatürk Üniversitesi Adresli: Evet

Özet

L1, L alpha, L beta and L gamma XRF cross-sections were measured in heavy elements 73 less than or equal to Z less than or equal to 92 at excitation energies of 59.5 and 123.6keV photons. Measurements were made using two excitation sources. The experimental values of the cross-sections were determined by measuring the absolute yield of L-subshell X-rays emitted from a target of a given element and thickness when it was bombarded with a known flux of photons of given energy. It is observed that the measured L XRF cross-section values for the elements are in general agreement with the theoretical ones evaluated using L-subshell fluorescent yields (omega(i)) and Coster-Kronig transition probabilities (f(ij)) based on the relativistic Dirac-Hartree-Slater theory. The present and previous measured and calculated values of the cross-sections are tabulated to bring out the existing status of L X-rays production cross-sections.