单词 | natural width of energy level |
释义 | natural width of energy level [`nach·rǝl ¦width ǝv `en·ǝr·jē ´lev·ǝl] PHYSICS A measure of the spread in energy of an excited state of a quantized system due to spontaneous transitions to other states; quantitatively, it is the difference between the energies for which the intensity of emission from or absorption by the state, or of the scattering cross section associated with it, is one-half its maximum value, in the absence of any external influence on the system. |
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