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Study of Interatomic Potentials Using the Crystal-GRID Method on Oriented Single Crystals of Ni, Fe, and Cr

The Crystal-GRID method is used to study interatomic collisions at low energy in metals and such to probe the repulsive interatomic potential. Line shapes of gamma rays, emitted by the recoiling (59)Ni isotope after thermal neutron capture in Ni single crystals, were measured and compared to results...

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Autores principales: Stritt, N., Jolie, J., Jentschel, M., Börner, H. G., Doll, C.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 2000
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4878358/
https://www.ncbi.nlm.nih.gov/pubmed/27551589
http://dx.doi.org/10.6028/jres.105.009
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author Stritt, N.
Jolie, J.
Jentschel, M.
Börner, H. G.
Doll, C.
author_facet Stritt, N.
Jolie, J.
Jentschel, M.
Börner, H. G.
Doll, C.
author_sort Stritt, N.
collection PubMed
description The Crystal-GRID method is used to study interatomic collisions at low energy in metals and such to probe the repulsive interatomic potential. Line shapes of gamma rays, emitted by the recoiling (59)Ni isotope after thermal neutron capture in Ni single crystals, were measured and compared to results obtained by molecular dynamics simulations of the slowing down. The same procedure is also used for recoiling (57)Fe and (54)Cr atoms in Fe and Cr single crystals, respectively. Different potentials (including several from the embedded atom method) are investigated using the observed fine structure of the line shape which depends on the crystal orientations. From the detailed study of the lineshapes measured in two different orientations, a new potential is then derived for each element. Nuclear state lifetimes for the excited isotopes are also deduced with a higher precision than obtained with standard nuclear techniques.
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spelling pubmed-48783582016-08-22 Study of Interatomic Potentials Using the Crystal-GRID Method on Oriented Single Crystals of Ni, Fe, and Cr Stritt, N. Jolie, J. Jentschel, M. Börner, H. G. Doll, C. J Res Natl Inst Stand Technol Article The Crystal-GRID method is used to study interatomic collisions at low energy in metals and such to probe the repulsive interatomic potential. Line shapes of gamma rays, emitted by the recoiling (59)Ni isotope after thermal neutron capture in Ni single crystals, were measured and compared to results obtained by molecular dynamics simulations of the slowing down. The same procedure is also used for recoiling (57)Fe and (54)Cr atoms in Fe and Cr single crystals, respectively. Different potentials (including several from the embedded atom method) are investigated using the observed fine structure of the line shape which depends on the crystal orientations. From the detailed study of the lineshapes measured in two different orientations, a new potential is then derived for each element. Nuclear state lifetimes for the excited isotopes are also deduced with a higher precision than obtained with standard nuclear techniques. [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 2000 2000-02-01 /pmc/articles/PMC4878358/ /pubmed/27551589 http://dx.doi.org/10.6028/jres.105.009 Text en https://creativecommons.org/publicdomain/zero/1.0/ The Journal of Research of the National Institute of Standards and Technology is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. Articles from J Res may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright.
spellingShingle Article
Stritt, N.
Jolie, J.
Jentschel, M.
Börner, H. G.
Doll, C.
Study of Interatomic Potentials Using the Crystal-GRID Method on Oriented Single Crystals of Ni, Fe, and Cr
title Study of Interatomic Potentials Using the Crystal-GRID Method on Oriented Single Crystals of Ni, Fe, and Cr
title_full Study of Interatomic Potentials Using the Crystal-GRID Method on Oriented Single Crystals of Ni, Fe, and Cr
title_fullStr Study of Interatomic Potentials Using the Crystal-GRID Method on Oriented Single Crystals of Ni, Fe, and Cr
title_full_unstemmed Study of Interatomic Potentials Using the Crystal-GRID Method on Oriented Single Crystals of Ni, Fe, and Cr
title_short Study of Interatomic Potentials Using the Crystal-GRID Method on Oriented Single Crystals of Ni, Fe, and Cr
title_sort study of interatomic potentials using the crystal-grid method on oriented single crystals of ni, fe, and cr
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4878358/
https://www.ncbi.nlm.nih.gov/pubmed/27551589
http://dx.doi.org/10.6028/jres.105.009
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