Coherent scattering cross sections of some lanthanides for 241Am and 137Cs gamma rays at low momentum transfer

Vinay Kumar, L. and Umesh, T. K. (2014) Coherent scattering cross sections of some lanthanides for 241Am and 137Cs gamma rays at low momentum transfer. European Physical Journal D, 68 (3). ISSN 1434-6079

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Abstract

In this paper, we report the coherent scattering cross sections of some lanthanides at low momentum transfer in four angular ranges of (0°-4°), (0°-6°), (0°-8°) and for 241Am (59.54 keV) and 137Cs (661.6 keV) gamma rays. The coherent scattering cross sections were derived by subtracting the small contribution of the corresponding angle integrated incoherent scattering cross sections from the experimentally measured total (coherent + incoherent) scattering cross sections for the elements and energies of interest. The coherent scattering cross sections were found to agree with the corresponding theoretical cross sections within the range of experimental errors. The theoretical coherent scattering cross sections were computed by numerically integrating the S-matrix data of the elements in the angular ranges of interest. The incoherent scattering cross sections were based on the compilations which make use of the non-relativistic Hartree-Fock (NRHF) model for the atomic charge distribution.

Item Type:	Article
Subjects:	D Physical Science > Physics
Divisions:	Department of > Physics
Depositing User:	Arshiya Kousar Library Assistant
Date Deposited:	29 Aug 2019 09:50
Last Modified:	30 Jun 2020 10:21
URI:	http://eprints.uni-mysore.ac.in/id/eprint/4327

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