Knight Shift

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Knight shift

[′nīt ‚shift]
A shift of the nuclear magnetic resonance frequency in a metal to higher values than that of the same nucleus in a diamagnetic compound.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Knight Shift


a shift in the resonance frequencies of nuclear magnetic resonance in metals and alloys owing to relaxation caused by the interaction between the conduction electrons and the magnetic moments of the atomic nuclei. It was discovered and explained by the American physicist W. D. Knight in 1949.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
There are two known contributions to the total [sup.13]C NMR shift of metallic tubes, namely, the Knight shift K and the chemical shift [sigma], where the Knight shift arises from the hyperfine coupling of the nuclei to conduction electron spins and the chemical shift summarizes all contributions from orbital currents due to local magnetic fields.
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