School of Physics Lecture Demonstration Manual

Na-5 Nuclear Magnetic Resonance

Published: Friday 17 March 2006 - Updated: Thursday 31 March 2011

Aim

To visually demonstrate nuclear magnetic resonance

Apparatus

NMR demonstration apparatus

Diagrams

Click on pictures to enlarge.

Nuclear Mag Res Pic

Description

The billiard balls in the demonstration apparatus have an intrinsic magnetic moment supplied by an imbedded magnetised disk. The demonstrator supplies a collinear angular momentum by manually setting the sphere spinning with a quick twist of the hand. The apparatus is subjected to a magnetic field rotating at the Larmor precession frequency perpendicular to a static field. Rotating the external field causes the classical "spin flip".

 NB: This demonstration may not be available if the experiment is in student use in the Part 3 laboratory.

Safety notes

Electrical safety 

Maintenance 

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