Knight Shift (Physics)
In nuclear physics, knight shift is a shift in the nuclear magnetic resonance of paramagnetic substances. It was first described in 1949 by Walter D. Knight at UC Berkeley .
The knight shift occurs on atoms in a metallic environment. It reflects the magnetic field of the conduction electrons from the vicinity of the core. For sodium, this magnetic field is about a thousandth weaker than the average field.
In principle, the knight shift can be temperature-dependent. In typical metals, however, the band structure and thus also the strength of the knight shift is not temperature-dependent.
Individual evidence
- ^ WD Knight: Nuclear Magnetic Resonance Shift in Metals . In: Physical Review . 76, No. 8, October 15, 1949, pp. 1259-1260. bibcode : 1949PhRv ... 76.1259K . doi : 10.1103 / PhysRev.76.1259.2 .
- ↑ National Academies Press: Biographical Memoirs: Walter David Knight, October 14, 1919 – June 28, 2000; By Erwin L. Hahn, Vitaly V. Kresin, and John H. Reynolds
- ^ University of California: In Memoriam, 2000; Walter David Knight, Physics: Berkeley; 1919-2000; Professor Emeritus