Investigation of diffusion processes in liquid sodium and sodium-hydrogen melt by quasielastic neutron scattering

The quasielastic neutron scattering experiments on liquid sodium (at T = 378, 573, and 693 K) and sodiumhydrogen melt ( T = 693 K, hydrogen concentration ∼ 0.4 at %) were performed with the DIN-2PI time-of-flight spectrometer. The characteristics of the diffusion mobility for particles comprising th...

Full description

Saved in:
Bibliographic Details
Published in:JETP letters 2014-02, Vol.98 (12), p.834-838
Main Authors: Blagoveshchenskii, N. M., Novikov, A. G., Puchkov, A. V., Savostin, V. V., Shamaev, M. S., Zasorin, I. I.
Format: Article
Language:English
Subjects:
Atomic
Biological and Medical Physics
Biophysics
Molecular
Optical and Plasma Physics
Particle and Nuclear Physics
Physics
Physics and Astronomy
Quantum Information Technology
Solid State Physics
Spintronics
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The quasielastic neutron scattering experiments on liquid sodium (at T = 378, 573, and 693 K) and sodiumhydrogen melt ( T = 693 K, hydrogen concentration ∼ 0.4 at %) were performed with the DIN-2PI time-of-flight spectrometer. The characteristics of the diffusion mobility for particles comprising the liquids studied are extracted from the experimental results and analyzed with the help of the phenomenological and “relaxing cage” models. The self-diffusion coefficient in liquid sodium obtained for all temperatures is in the agreement with the values known from literature. The diffusion mobility in pure sodium and in sodium-hydrogen melt were found to be coinciding; it leads to the conclusion that in our experimental conditions hydrogen exists and diffuses in melt in the form of hydride NaH.
ISSN:0021-3640
1090-6487
DOI:10.1134/S002136401325005X