کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5395648 1505722 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Measurement of L-XRF cross-sections and Coster-Kronig enhancement factors for 62Sm at excitation energies 6.8, 7.4 and 8 KeV
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Measurement of L-XRF cross-sections and Coster-Kronig enhancement factors for 62Sm at excitation energies 6.8, 7.4 and 8 KeV
چکیده انگلیسی
Lℓ, Lα and Lβ XRF production cross-sections were measured for 62Sm at excitation energies i.e. 6.8 KeV, 7.4 KeV and 8 KeV using synchrotron radiations. Experimental measurements were also carried out to examine the effect of Coster-Kronig transitions (non-radiative transitions) on fluorescence cross section for the Li (i = 1, 2, 3) X-ray lines. The experimental cross-sections with greater accuracy and better signal to noise ratio can be measured using a polarized monoenergetic excitation beam and a high resolution detector system. A Peltier cooled vortex solid state detector with energy resolution of 138 eV at 5.959 keV X-ray was employed. Experimentally measured cross-sections have been compared with the theoretical predictions with the data of M.O. Krause [J. Phys. Chem. Ref. Data 8 (1979) 307], J.L. Campbell [At. Data Nucl. Data Tables 85 (2003) 291] and S. Puri et al. [X-Ray Spectrom. 22 (1993) 358]. The measured enhancement factors were found to be smaller than the theoretically calculated values.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electron Spectroscopy and Related Phenomena - Volume 209, May 2016, Pages 34-39
نویسندگان
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