The measurement of self-diffusion coefficients in liquid germanium using quasielastic neutron scattering

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autor(en): Weiss H, Unruh T, Meyer A
Zeitschrift: High Temperatures-High Pressures
Verlag: OLD CITY PUBLISHING INC
Jahr der Veröffentlichung: 2013
Band: 42
Heftnummer: 1
Seitenbereich: 39-47
ISSN: 0018-1544


Abstract


We measured dynamic structure factors using quasielastic neutron scattering for two liquid germanium samples, one in natural isotope abundance, and a second one with a Ge-nat/73 isotope mixture which exhibits an order of magnitude larger ratio of incoherent to coherent neutron scattering cross section. In an intermediate q range corresponding spectra exhibit similar quasielastic broadening. We show that the measured quasielastic line originates from incoherent scattering. Coherent contributions appear as an almost energy independent background. From the incoherent quasielastic neutron scattering signal self-diffusion coefficients can therefore accurately be derived.



FAU-Autoren / FAU-Herausgeber

Unruh, Tobias Prof. Dr.
Professur für Nanomaterialcharakterisierung (Streumethoden)


Autor(en) der externen Einrichtung(en)
Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)


Zitierweisen

APA:
Weiss, H., Unruh, T., & Meyer, A. (2013). The measurement of self-diffusion coefficients in liquid germanium using quasielastic neutron scattering. High Temperatures-High Pressures, 42(1), 39-47.

MLA:
Weiss, Henning, Tobias Unruh, and Andreas Meyer. "The measurement of self-diffusion coefficients in liquid germanium using quasielastic neutron scattering." High Temperatures-High Pressures 42.1 (2013): 39-47.

BibTeX: 

Zuletzt aktualisiert 2018-10-08 um 15:40