Knight shift
id:
knight-shift-275-3132623
title:
Knight shift
text:
The Knight shift is a shift in the nuclear magnetic resonance (NMR) frequency of a paramagnetic substance first published in 1949 by the UC Berkeley physicist Walter D. Knight. For an ensemble of N spins in a magnetic induction field B → , the nuclear Hamiltonian for the Knight shift is expressed in Cartesian form by: H ^ KS = − ∑ i N γ i ⋅ I → ^ i ⋅ K ^ i ⋅ B → , where for the ith spin γ i is the gyromagnetic ratio, I → ^ i is a vector of the Cartesian nuclear angular momentum operators, the K
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wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Knight_shift
date created:
date modified:
2023-07-18T21:35:05Z
main entity:
{"identifier":"Q4411781","url":"https://www.wikidata.org/entity/Q4411781"}
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13
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