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.
Line shape peculiarities in diffuse series of [I.sup.b] spectra can therefore be explained, since the data relative to lower frequency lines are those utilized to obtain Figure 1, while by increasing frequency we get closer to conditions corresponding to Figure 2.
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