A time constant describing the return to equilibrium of MXY.
The time to reduce the transverse magnetization by a factor of e.
T2 < = T1
Any transverse magnetization behaves the same way.
Contributions to the decay of transverse magnetization
- molecular interactions (said to lead to a pure pure T2 molecular effect)
- variations in Bo (said to lead to an inhomogeneous
1/T2* = 1/T2 + 1/T2inhomo.