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
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 .
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.