Question
In an atomic nucleus, this quantity is proportional to the g-factor times the nuclear spin. For 10 points each:
[10m] Name this quantity that is said to be “anomalous” for the electron because its value deviates from a g-factor of 2. This quantity is equal to the ratio between potential energy and magnetic field strength.
ANSWER: magnetic moment [or magnetic dipole moment; accept anomalous magnetic moment; prompt on dipole moment; reject “electric dipole moment”]
[10h] The interaction between the magnetic moments of nuclei and quadrupole moments of electrons contributes to this feature. The 21-centimeter line in hydrogen occurs due to this feature.
ANSWER: hyperfine structure [reject “fine structure”]
[10e] Electron magnetic moments are written in terms of this physicist’s magneton constant. This physicist proposed a primitive model of the atom with electrons circularly orbiting a nucleus.
ANSWER: Niels Bohr [or Niels Henrik David Bohr; accept Bohr model or Bohr magneton]
<Physics>
Summary
| 2023 ACF Winter @ Columbia | 11/11/2023 | Y | 5 | 16.00 | 100% | 60% | 0% |
Data
| Columbia A | Haverford | 10 | 0 | 10 | 20 |
| Columbia B | Rowan A | 0 | 0 | 10 | 10 |
| Cornell C | Penn A | 10 | 0 | 10 | 20 |
| NYU A | Bard A | 0 | 0 | 10 | 10 |
| Rutgers A | Yale B | 10 | 0 | 10 | 20 |