スピン (spin)

最終更新日：2023.12.07

スピン、電子スピン、核スピン。物理化学でちょっとだけ習った懐かしくも不可解な述語-スピン-。化学ではNMR（核磁気共鳴）やESR（電子スピン共鳴）などでにもなじみのスピン。量子力学に出てくるスピンはさらに難解。こんなわけで、できるだけスピンに関わらないように過ごしてきたあなた、そして私。 ここでは、磁石から、スピン（電子スピンと核スピン）、スピン相互作用、オルト/パラ水素、水素原子核（陽子）の散乱長と散乱断面積に至るまで、一気通貫でおさらい。
Spin, electron spin, nuclear spin. Spin is a nostalgic but puzzling predicate that we learned in physical chemistry for a little while. Spin is also familiar in chemistry through NMR (Nuclear Magnetic Resonance) and ESR (Electron Spin Resonance). Spin in quantum mechanics is even more difficult to understand. So, you and I have spent our lives trying to stay away from spin as much as possible. Here we review everything from magnets, spin (electron spin and nuclear spin), spin interactions, ortho/para hydrogen, and hydrogen nuclei (protons) to scattering lengths and scattering cross sections in a single step.

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