Recent content by collateral
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Graduate NMR Theory, Relaxation and Precession
Thanks ZapperZ (and everyone else), I think I was mixing up quantum and classical too. The explanations helped as well. I have another question now regarding T1...When we say that the states become saturated is it that all the spin states are in the higher energy state? Because if we lowered...- collateral
- Post #10
- Forum: Atomic and Condensed Matter
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Graduate NMR Theory, Relaxation and Precession
OK, I am a biochem, so I hope that explains my confusion. Looking at other threads, I realize that I was trying to find out why applying a B1 field orthogonal to B0 would cause the spins to change state. I realize that this is now in quantum territory, which I know nothing about - all I...- collateral
- Post #6
- Forum: Atomic and Condensed Matter
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Graduate NMR Theory, Relaxation and Precession
Why is there is a signal induced when it's precessing in the transverse plane? I always thought this was because the spins with B0 all can go to spins against B0 when they absorb photons. Also, why do we use a 90° pulse as opposed to a continuous wave (because wouldn't a continuous wave saturate...- collateral
- Post #4
- Forum: Atomic and Condensed Matter
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Graduate NMR Theory, Relaxation and Precession
Hello everyone, I'm having a really confusing time trying to get my head around these concepts, so I will try to explain what I can... So, in proton NMR we have nuclei that can be in either spin-up or spin-down states. Nuclei align with an external magnetic field but precess. (This precession...- collateral
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- Nmr Precession Theory
- Replies: 10
- Forum: Atomic and Condensed Matter