Determination of effective atomic number of composite materials using backscattered gamma photons – A novel method

Determination of effective atomic number of composite materials using backscattered gamma photons... Chemical Physics Letters 695 (2018) 94–98 Contents lists available at ScienceDirect Chemical Physics Letters journal homepage: www.elsevier.com/locate/cplett Research paper Determination of effective atomic number of composite materials using backscattered gamma photons – A novel method M.M. Hosamani, N.M. Badiger Department of Studies in Physics, Karnatak University, Dharwad 580003, India ar ti c l e i nf o ab stra ct Article history: The effective atomic number (Z ) of composite materials has been determined by measuring the eff Received 4 October 2017 backscattered gamma photons at 180. A 661.6 keV gamma photons from Cs radioactive source are In final form 6 February 2018 allowed to scatter at an angle of 180 from the sample. The backscattered photons at 180 from the sam- Available online 7 February 2018 ple are detected with ‘‘2  2 NaI(Tl) scintillation gamma ray spectrometer coupled to 16 K Multi Channel Analyzer (MCA). It is observed experimentally that the intensity of backscattered photons increases ini- Keywords: tially with increasing the thickness of the target and then it becomes saturated above a certain thickness. Effective atomic number By knowing the saturated thickness values for known atomic number of the elemental targets, the Z of eff Backscattered http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Chemical Physics Letters Elsevier

Determination of effective atomic number of composite materials using backscattered gamma photons – A novel method

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Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier Ltd
ISSN
0009-2614
eISSN
1873-4448
D.O.I.
10.1016/j.cplett.2018.02.012
Publisher site
See Article on Publisher Site

Abstract

Chemical Physics Letters 695 (2018) 94–98 Contents lists available at ScienceDirect Chemical Physics Letters journal homepage: www.elsevier.com/locate/cplett Research paper Determination of effective atomic number of composite materials using backscattered gamma photons – A novel method M.M. Hosamani, N.M. Badiger Department of Studies in Physics, Karnatak University, Dharwad 580003, India ar ti c l e i nf o ab stra ct Article history: The effective atomic number (Z ) of composite materials has been determined by measuring the eff Received 4 October 2017 backscattered gamma photons at 180. A 661.6 keV gamma photons from Cs radioactive source are In final form 6 February 2018 allowed to scatter at an angle of 180 from the sample. The backscattered photons at 180 from the sam- Available online 7 February 2018 ple are detected with ‘‘2  2 NaI(Tl) scintillation gamma ray spectrometer coupled to 16 K Multi Channel Analyzer (MCA). It is observed experimentally that the intensity of backscattered photons increases ini- Keywords: tially with increasing the thickness of the target and then it becomes saturated above a certain thickness. Effective atomic number By knowing the saturated thickness values for known atomic number of the elemental targets, the Z of eff Backscattered

Journal

Chemical Physics LettersElsevier

Published: Mar 1, 2018

References

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