Longitudinal or spin lattice relaxation when spins begin to precess at smaller angles is termed:

Question

Quizplus · Accepted Answer

Longitudinal relaxation, also known as T1 relaxation, is the relaxation process of the magnetization vector along the direction of the applied magnetic field. When spins begin to precess at smaller angles, they start to lose coherence and align with the applied field, which increases T1 relaxation. Therefore, A) is the correct choice.

B) T2 relaxation is the relaxation process of the magnetization vector perpendicular to the applied magnetic field. It is related to the loss of phase coherence among the spins and is not directly related to the precession angle of the spins.

C) Spin density refers to the number of spins per unit volume in a sample, and it does not relate to the relaxation behavior of the spins.

D) Free induction decay is the process of the decay of the transverse magnetization following the application of an RF pulse, and it is not directly related to the longitudinal or transverse relaxation processes.

Longitudinal or Spin Lattice Relaxation When Spins Begin to Precess