Forbidden transitions from metastable states are often called as satellite lines.
2.
The selection rules for the th forbidden transitions are:
3.
These are the so-called forbidden transitions.
4.
This high spin change causes these decays to be so-called forbidden transitions, and thus delayed.
5.
Bowen was able to calculate the forbidden transitions of doubly ionized oxygen to be exactly where the lines had been found.
6.
The normally forbidden transitions lead to an increase in the f-f intermixing and thus enhancement of the upconversion efficiency.
7.
However, forbidden transitions are allowed if the centre of symmetry is disrupted, and indeed, such apparently forbidden transitions are then observed in experiments.
8.
However, forbidden transitions are allowed if the centre of symmetry is disrupted, and indeed, such apparently forbidden transitions are then observed in experiments.
9.
However, there are other factors that influence the intensity of a spectral line, such as whether it is caused by an allowed or a forbidden transition.
10.
At room temperature, O 2 exists in a triplet state, which can only undergo a chemical reaction by making the forbidden transition into a singlet state.
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