The time required after precessing spins have aligned at an angle to the external field due to an RF pulse losing 63% of their coherence is A)spin density ($\rho$). B)spin-spin relaxation time (T₂). C)echo time (TE). D)spin-lattice relaxation time (T₁).

Question

Quizplus · Accepted Answer

The time required for spins to lose 63% of their coherence is the spin-lattice relaxation time (T1). None of the other options represent T1, so the answer is D.

The Time Required After Precessing Spins Have Aligned at an Angle