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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2971
Title: L1 and L2 sub-shell fluorescence yields for elements with 64 ? Z ? 70
Authors: Kumar A.
Puri S.
Published in: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Abstract: The L1 and L2 sub-shell fluorescence yields have been deduced for elements with 64 ? Z ? 70 from the Lk(k = l, ?, ?1,4, ?3,6, ?2,15,9,10,7, ?1,5 and ?2,3,4) X-ray production cross sections measured at 22.6 keV incident photon energy using a spectrometer involving a disc type radioisotope of Cd109 as a photon source and a Peltier cooled X-ray detector. The incident photon intensity, detector efficiency and geometrical factor have been determined from the K X-ray yields emitted from elemental targets with 20 ? Z ? 42 in the same geometrical setup and from knowledge of the K shell cross sections. The present deduced ?1(exp) values, for elements with 64 ? Z ? 70, are found to be in good agreement with those tabulated by Campbell (J.L. Campbell, Atom. Data Nucl. Data Tables 95 (2009) 115), where as these are, on an average, higher by 19% and 24% than those based on the Dirac-Hartree-Slater model (S. Puri et al., X-ray Spectrometry 22 (1993) 358) and the semi-empirical values compiled by Krause (M.O. Krause, J. Phys. Chem. Ref. Data 8 (1979) 307), respectively. The present deduced ?2(exp) values are found to be in good agreement with those based on the Dirac-Hartree-Slater model and are higher by up to ?13% than the semi-empirical values for the elements under investigation. © 2010 Elsevier B.V. All rights reserved.
Citation: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms (2010), 268(10): 1546-1550
URI: https://doi.org/10.1016/j.nimb.2010.02.007
http://repository.iitr.ac.in/handle/123456789/2971
Issue Date: 2010
Keywords: Fluorescence and Coster-Kronig yields
X-ray production cross sections
ISSN: 0168583X
Author Scopus IDs: 7408043275
7202592160
Author Affiliations: Kumar, A., University College of Engineering, Punjabi University, Patiala, 147002, India
Puri, S., University College of Engineering, Punjabi University, Patiala, 147002, India
Funding Details: One of the authors (SP) acknowledges the financial support provided in the form of a research project by the Department of Science and Technology (DST) , New Delhi, India.
Corresponding Author: Puri, S.; University College of Engineering, Punjabi University, Patiala, 147002, India; email: sanjivpurichd@yahoo.com
Appears in Collections:Journal Publications [CY]

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