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A New Model of Low Resolution Absorption Cross Section

Improved Model of Low Resolution Absorption Cross Section (XS) [Pg.75]

Appendix C. The Temperature Dependence of the Absorption Cross Section 99 [Pg.75]

The Absorption Cross Section (Abs. XS or XS or a(E)) of molecules in the visible and or UV range is due to (at least one) electronic transition. At low resolution, each Abs.XS has a bell shape which can be described with very few (3 or 4, see below) parameters. This bell shape can be understood as the reflection of the ground state vibrational wavefunction (which can be approximated as a onedimensional or multidimensional Gaussian) on the potential energy surface (PES) [Pg.75]

Laboratoire de Spectrometrie Physique, Universite Joseph Fourier de Grenoble, B.P. 87, F-38042 Saint Martin d Fleres Cedex, France [Pg.75]

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