- #1
xfshi2000
- 31
- 0
Hi all:
I have one confused concept about T1 relaxation time in nuclear magnetic resonance field.
As we know, fluctuation of local magnetic field inside the sample causes T1 decay in the following RF excitation. Imagine one simple mode, near a gadolinium ion (Gd3+), there is one water molecule. For ideal case, there are no other atom or molecule. The whole system consists of the ion and single water molecule. We know total magnetic moment is fixed for Gd3+. Total magnetic moment include spin magnetic moment, spin-orbital magnetic moment, electron orbital magnetic moment, and ion rotation induced magnetic moment, et al. If total magnetic moment is contant, how can this ion generate a fluctuation of magnetic field in the site of water molecule? thanks
xf
I have one confused concept about T1 relaxation time in nuclear magnetic resonance field.
As we know, fluctuation of local magnetic field inside the sample causes T1 decay in the following RF excitation. Imagine one simple mode, near a gadolinium ion (Gd3+), there is one water molecule. For ideal case, there are no other atom or molecule. The whole system consists of the ion and single water molecule. We know total magnetic moment is fixed for Gd3+. Total magnetic moment include spin magnetic moment, spin-orbital magnetic moment, electron orbital magnetic moment, and ion rotation induced magnetic moment, et al. If total magnetic moment is contant, how can this ion generate a fluctuation of magnetic field in the site of water molecule? thanks
xf