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Updated: Jun 19, 2026

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids
Published on: May 27, 2020
Collision integrals for interactions involving atoms in electronically excited states
Annarita Laricchiuta1, Fernando Pirani, Gianpiero Colonna
1CNR Institute of Inorganic Methodologies and Plasma, Bari, Italy. annarita.laricchiuta@ba.imip.cnr.it
Abstract:
Transport collision integrals for low-lying excited states of nitrogen atoms and ions are derived in the framework of a phenomenological approach following, where possible, also the traditional multipotential procedure. The two sets of results are compared considering critically the observed deviations, and finally, the proposed model is validated by comparison with oxygen atom-atom interactions. In addition, an attempt is made to extend the proposed phenomenological method to interactions involving high-lying excited states, taking into account the symmetric interaction of two excited hydrogen atoms, characterized by increasing principal quantum number.
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