Hydrogen motion in lanthanum hydrides by means of quasielastic neutron scattering

C. Karmonik; T. J. Udovic; J. J. Rush

doi:10.1557/proc-513-149

Hydrogen motion in lanthanum hydrides by means of quasielastic neutron scattering

C. Karmonik, T. J. Udovic, J. J. Rush

Research output: Contribution to journal › Conference article › peer-review

3 Scopus citations

Abstract

The hydrogen dynamics in LaH_x was studied for different concentrations x≥2.5 at different temperatures by quasielastic neutron scattering. The neutron spectra show the existence of both long-range translational diffusion and localized motion. The prefactor of the jump rate for the first process exhibits a maximum around x = 2.75. The radius for the second motion is in agreement with neutron powder diffraction measurements which support a localized motion of H confined in an octahedral site.

Original language	English (US)
Pages (from-to)	149-154
Number of pages	6
Journal	Materials Research Society Symposium - Proceedings
Volume	513
DOIs	https://doi.org/10.1557/proc-513-149
State	Published - 1998
Event	Proceedings of the 1998 MRS Spring Meeting - San Francisco, CA, USA Duration: Apr 13 1998 → Apr 17 1998

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Hydrogen motion in lanthanum hydrides by means of quasielastic neutron scattering",

abstract = "The hydrogen dynamics in LaHx was studied for different concentrations x≥2.5 at different temperatures by quasielastic neutron scattering. The neutron spectra show the existence of both long-range translational diffusion and localized motion. The prefactor of the jump rate for the first process exhibits a maximum around x = 2.75. The radius for the second motion is in agreement with neutron powder diffraction measurements which support a localized motion of H confined in an octahedral site.",

author = "C. Karmonik and Udovic, {T. J.} and Rush, {J. J.}",

year = "1998",

doi = "10.1557/proc-513-149",

language = "English (US)",

volume = "513",

pages = "149--154",

journal = "Materials Research Society Symposium - Proceedings",

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publisher = "Materials Research Society",

note = "Proceedings of the 1998 MRS Spring Meeting ; Conference date: 13-04-1998 Through 17-04-1998",

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TY - JOUR

T1 - Hydrogen motion in lanthanum hydrides by means of quasielastic neutron scattering

AU - Karmonik, C.

AU - Udovic, T. J.

AU - Rush, J. J.

PY - 1998

Y1 - 1998

N2 - The hydrogen dynamics in LaHx was studied for different concentrations x≥2.5 at different temperatures by quasielastic neutron scattering. The neutron spectra show the existence of both long-range translational diffusion and localized motion. The prefactor of the jump rate for the first process exhibits a maximum around x = 2.75. The radius for the second motion is in agreement with neutron powder diffraction measurements which support a localized motion of H confined in an octahedral site.

AB - The hydrogen dynamics in LaHx was studied for different concentrations x≥2.5 at different temperatures by quasielastic neutron scattering. The neutron spectra show the existence of both long-range translational diffusion and localized motion. The prefactor of the jump rate for the first process exhibits a maximum around x = 2.75. The radius for the second motion is in agreement with neutron powder diffraction measurements which support a localized motion of H confined in an octahedral site.

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U2 - 10.1557/proc-513-149

DO - 10.1557/proc-513-149

M3 - Conference article

AN - SCOPUS:0031639407

SN - 0272-9172

VL - 513

SP - 149

EP - 154

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

T2 - Proceedings of the 1998 MRS Spring Meeting

Y2 - 13 April 1998 through 17 April 1998

ER -

Hydrogen motion in lanthanum hydrides by means of quasielastic neutron scattering

Abstract

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