Question
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>
Summary
| California | 2025-02-01 | Y | 3 | 20.00 | 100% | 100% | 0% |
| Florida | 2025-02-01 | Y | 3 | 13.33 | 67% | 67% | 0% |
| Midwest | 2025-02-01 | Y | 6 | 18.33 | 100% | 67% | 17% |
| Overflow | 2025-02-01 | Y | 5 | 8.00 | 40% | 20% | 20% |
| Pacific Northwest | 2025-02-01 | Y | 2 | 10.00 | 50% | 50% | 0% |
| South Central | 2025-02-01 | Y | 2 | 10.00 | 50% | 50% | 0% |
| Southeast | 2025-02-01 | Y | 3 | 3.33 | 33% | 0% | 0% |
| UK | 2025-02-01 | Y | 10 | 14.00 | 60% | 70% | 10% |