4. The same year Einstein and de Haas
showed the counter effect.
5. Homonuclear Dipole – Dipole Hamiltonian: Expresses the interaction of two like
spins with fixed physical coordinates.
6. HOW DOES PHYSICAL ROTATION INDUCE
MAGNETIZATION?
Expressed in spherical
coordinates.
Ehrenfest
Theorem
It can be shown that…
Where
But we are talking about a
macroscopic system…
8. CHANGING TO A ROTATING FRAME
It is clear that magnetization would be produce
Due to the appearance of a so called ghost magnetic field
9. QUESTION?
Can the Barnett Effect be expressed and detected at the nuclear regime?
WHY?
As a first it has never been proven. If proved it can open the door to pumping spin
magnetization through mechanical rotation instead of using NMR magnetic fields which are
very expensive to maintain. Possibly special
rotation + vibrations sequences can be created to obtain desired results.
GUESS…
I do believe this effect should be pronounced, but we need an experiment to test the theory
as always.
10. PROBLEM!!!
There is no machinery out in the market
that would allow us to conduct this
experiment right away.
Built a machine capable of functioning in
many stages in order to prove this effect.
11. WHAT SHOULD THIS MACHINE BE CAPABLE OF?
Spinning
Bullet containing
sample.
Shuttling
Bullet.
NMR
Signal
MAIN STAGES
