Question: what is t1 and t2 in nmr?
Answer: T1 and T2 Relaxation. We distinguish two types of relaxation, Spin-Lattice (T1, also known as longitudinal relaxation, or relaxation in the z-direction) and Spin-Spin (T2, also known as transverse relaxation, or relaxation in the x-y plane). ... T2 is loss of phase coherence among nuclei.