diffuse series

diffuse series

[də′fyüs ′sir·ēz]
(spectroscopy)
A series occurring in the spectra of many atoms having one, two, or three electrons in the outer shell, in which the total orbital angular momentum quantum number changes from 2 to 1.
References in periodicals archive ?
In every diffuse series, lines tend to become symmetric again and to narrow as frequency increases, as the intensity of the continuum on which they are superimposed decreases.
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