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

Weiss H, Unruh T, Meyer A (2013)

Publication Status: Published

Publication Type: Journal article

Publication year: 2013

Journal

High Temperatures-High Pressures Old City Publishing

Publisher: OLD CITY PUBLISHING INC

Book Volume: 42

Pages Range: 39-47

Journal Issue: 1

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.

Authors with CRIS profile

Tobias Unruh Professur für Nanomaterialcharakterisierung (Streumethoden)

Involved external institutions

Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR) / German Aerospace Center DE Germany (DE)

How to cite

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.

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