Chemical effect on the L X-ray cross-sections and average fluorescence yields of Hf compounds

Aylikci V., Apaydin G., Tirasoglu E., Kaya N., CENGIZ E.

CHEMICAL PHYSICS, vol.332, pp.348-352, 2007 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 332
  • Publication Date: 2007
  • Doi Number: 10.1016/j.chemphys.2006.12.019
  • Journal Name: CHEMICAL PHYSICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.348-352
  • Keywords: chemical effect, cross-section, average fluorescence yield, ultra-LEGe detector, Co-57 annular radioactive source, L-ALPHA/L-BETA, INTENSITY RATIOS, L-SHELL, CE COMPOUNDS, BI COMPOUNDS, L-GAMMA, ELEMENTS, BA, IMPACT, PB
  • Karadeniz Technical University Affiliated: Yes

Abstract

Chemical effects on the L X-ray production cross-sections (alpha(Ll), sigma(L proportional to), sigma(L beta), and sigma(L gamma)) and the average fluorescence yield (omega(L)) for Hf compounds were investigated. In this study, the samples were excited by 123.6 keV gamma-rays from a Co-57 annular radioactive source. L X-rays emitted by samples were counted by an Ultra-LEGe detector with a resolution of 150 eV at 5.9 keV. We observed a chemical effect on the L X-ray cross-sections and average fluorescence yield for Hf compounds. However, the sigma(Ll) cross-section; dependence on the chemical state of Hf compounds is almost negligible. The experimental values have been compared with the theoretically calculated values of pure Hf. (c) 2007 Elsevier B.V. All rights reserved.