Forbidden mechanism
- 禁制机制（禁制机制是光谱学中的一种现象，指的是在特定条件下，原子核、原子或分子的吸收与发射谱线中，某些谱线被禁止出现，但在高阶逼近状态下仍可能出现，但速率较低）
Forbidden mechanism
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abstract:
In physics, a forbidden mechanism or forbidden line is a spectral line emitted by atoms undergoing nominally "forbidden" energy transitions not normally allowed by the selection rules of quantum mechanics. In formal physics, this means that the process cannot proceed via the most efficient (electric dipole) route.
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