Because of extraneous processes such as “flip-flops,” one form of this process always occurs at a faster rate than another. For 10 points each:
[10m] Name this process that describes how long it takes for the energy from an absorbed radiofrequency pulse to dissipate. This process comes in “T1” and “T2” types.
ANSWER: relaxation time [accept T1 relaxation or T2 relaxation]
[10e] Relaxation time is a property commonly measured when using this technique that uses a B-field to align spins in a molecule. MRI is based on this technique that typically involves either protons or carbon-13.
ANSWER: NMR spectroscopy [or nuclear magnetic resonance spectroscopy]
[10h] T1 and T2 relaxations are sometimes given two names describing their energy interactions, one of which causes demagnetization in the longitudinal z-axis and the other of which causes demagnetization in the transverse xy-plane. Name either.
ANSWER: spin–lattice relaxation OR spin–spin relaxation [reject answers that mention “splitting” or “coupling”]
<Manchester, Chemistry>