11.01 Nuclear Spin in a Magnetic Field

Magnetic moments of spin-active nuclei. Response of magnetic nuclei to an external magnetic field. The bulk magnetization vector and demonstration of precession frequency. Magnetic nuclei as compass needles.

Simulations in this video were prepared using the Insensitive NMR program (it’s free!): https://www.chemie.uni-hamburg.de/nmr... and the CompassMR interactive simulator: http://www.drcmr.dk/CompassMR/.

00:00 Introduction
00:46 Nuclear Spin and Magnetic Moment
01:25 NMR-active Nuclei; Response to an External Magnetic Field
04:08 ↑-↓ Energy Difference and Magnetic Field Strength
05:02 The Bulk Magnetization Vector and Effects of Radio Waves
05:56 Acquiring an NMR Spectrum
07:31 An Analogy: Nuclear Magnetic Moments as Compass Needles