Absorption transitions and excitation polarization spectrum

An absoiption spectrum could be the result of the overlapping of two or more absorption transitions. Separation of each band can be performed by means of the excitation polarization spectnim. If the spectrum consists of regions of constant polarization joined regions of varying polarizalioo, it is possible to consider that one 

Finally, the absoiption spectium of each band can be obtained b nuhiplying at wavelength the absorption of the overall spectrum 1 the fiactional contribution. 

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