Atomic electron transition
Atomic electron transition is a change of an electron from one energy level to another within an atom or artificial atom. It appears discontinuous as the electron "jumps" from one energy level to another, typically in a few nanoseconds or less. It is also known as an electronic (de-)excitation or atomic transition or quantum jump.
Electron transitions cause the emission or absorption of electromagnetic radiation in the form of quantized units called photons. Their statistics are Poissonian, and the time between jumps is exponentially distributed. The damping time constant (which ranges from nanoseconds to a few seconds) relates to the natural, pressure, and field broadening of spectral lines. The larger the energy separation of the states between which the electron jumps, the shorter the wavelength of the photon emitted.
- Schombert, James. "Quantum physics" University of Oregon Department of Physics
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- Observing the quantum jumps of light
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- Schrödinger, Erwin (August 1952). "Are there quantum jumps? Part I" (PDF). The British Journal for the Philosophy of Science. 3 (10): 109–123. doi:10.1093/bjps/iii.10.109. Part 2
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- Gleick, James (October 21, 1986). "Physicists Finally Get To See the Quantum Jump". The New York Times. Retrieved August 23, 2013.