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- What is relaxation process in NMR?
- What are the mechanism of spin relaxation in NMR spectroscopy?
- What is meant by relaxation process?
- Why is relaxation important in NMR?
What is relaxation process in NMR?
NMR relaxation is the processes by which an excited magnetic state returns to its equilibrium distribution. NMR relaxation measurement can be used for spectral assignment and the study of quadrupolar and paramagnetic interactions, and exchange dynamics.
What are the mechanism of spin relaxation in NMR spectroscopy?
Spin-lattice relaxation mechanisms
The spin-lattice (or longitudinal) relaxation time T1 quantifies the rate of transfer of energy from the nuclear spin system to the neighboring molecules (the lattice). This is relaxation in the z-direction and leads to restoration of Boltzmann equilibrium.
What is meant by relaxation process?
Relaxation processes allow nuclear spins to return to equilibrium following a disturbance, e.g. a radiofrequency pulse. The relaxation times T1 and T 2 characterize the relaxation of, respectively, the longitudinal and transverse components of the magnetization M, respectively parallel and perpendicular to B0.
Why is relaxation important in NMR?
NMR relaxation may be used to probe molecular motion in the kilohertz range, using the relaxation time in the rotating frame, T1ρ. Here the relaxation is determined in the presence of the RF magnetic field. In this case there is a nonzero x–y field given by the amplitude of the RF field (γB1).
