1. Donut Spectroscopy: Homer Simpson Guide to NMR
Dwight Chambers
HSSP March 8, 2008
Background Credits:

2. What is Magnetism? Where does it come from? What “carries” magnetism?
How does it affect normal matter?
What are some examples of natural magnetic fields?
Image Credits:

3. Magnetism: Where does it come from?
The Earth? Magnets?
- Compass
Wires? DEMO?!?!?!
Moving Charges!
Faraday’s Law:

4. What “carries” magnetism?
Charge
Electrons
PROTONS!
NUCLEI!
Monopoles?
Dipolar fields

5. How does magnetism affect normal matter?
Torque
dM/dt = M x B
Right Hand Rule
Induction: Are we magnetic?
Zeeman Splitting: µ · B
Kinds of Magnetic Material:
Ferromagnetic, Diamagnetic, Paramagnetic

6. What are some examples of natural magnetic fields?
The Earth:
Gauss
Neutron Star:
<108 Gauss
NMR:
Gauss
Image Credit:

7. NMR BASICS Nuclear Magnetic Resonance Protons / Neutrons
Spin / Magnetic Moment
Resonance
Zeeman Energy
Image Credits:

8. NMR Schematic Main Magnetic Field Radio Frequency Coils
Superconducting
Radio Frequency Coils
Transmit and Detect
ADC -> Computer
Image Credit:

9. Imaging Basics Ways to define an image: Source - Image Model
Resolution
Field of View
Source - Image Model
Point Spread Function
Convolution
Image Credits:

12. http://www. people. cornell