| Autor: |
Mykola U. Bilyi, V. P. Sakun, G. I. Gaididei, Yuri Gaididei |
| Rok vydání: |
2002 |
| Předmět: |
|
| Zdroj: |
Selected Papers from the International Conference on Spectroscopy of Molecules and Crystals. |
| ISSN: |
0277-786X |
| Popis: |
Excitonic states in liquid and solid orientationally disordered solutions are considered. It is shown that collective propertiesof excitations depend essentially on correlation properties of orientational degrees of freedom of the solution. Specifically,this dependence is exponentially stronger in liquid solutions compared with solid solutions. It is also shown that energylevel shift caused by exciton interactions increases linearly with the concentration of molecuies.Keywords: solid and liquid solutions, excitonic states, orientationally disordered solutions 1. INTRODUCTION Physical properties of condensed systems (liquid and solid) are due as to their structure and the type of the intermolecularinteraction. There are two types of intermolecular interactions: translational intermolecular interaction and orientational intermolecular interaction. In the former case molecules are considered as spheres. This interaction determinestranslational order of the system. The orientational intermolecular interaction depends on anisotropic properties of |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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