18 represents a
forbidden transition. Line Wavelength Transition no.
The values of n are equal to 1/2 and 3/2 for direct allowed and
forbidden transitions, respectively.
This instrument enables classroom demonstrations of simple topics, such as free radicals in everyday life, to far less intuitive subjects like electron density, spin-orbit coupling, spin-spin exchange and
forbidden transitions. Bruker Corp.
m = 1/2 and 3/2 corresponds to direct allowed and direct
forbidden transitions and m = 2, 3 corresponds to indirect allowed and indirect
forbidden transitions, respectively [22].
For direct allowed transitions, m = 1/2, for the direct
forbidden transitions, m = 3/2, while m = 2 and m = 3 correspond to indirect allowed and
forbidden transitions.
The
forbidden transitions (M1 and E2) between the 2[s.sup.2]2p-2[s.sup.2]2p and [2s2p.sup.2]-[2sp.sup.2] levels become possible through the fine-structure splitting of LS term into a series of J levels.
