Berlin 2005 – wissenschaftliches Programm

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DY: Dynamik und Statistische Physik

DY 42: Statistical Physics (General) II

DY 42.6: Vortrag

Dienstag, 8. März 2005, 15:30–15:45, TU H3010

An EINSTEIN Memorial for Charge Transfer Reactions at the Phase Boundary of Molecular Crystals: Is it possible to Decide between FRENKEL and WANNIER Excitons by Applying his Mass-Energy Relation? — •Hermann M. M. Killesreiter — Privatgelehrter c/o TU Clausthal, priv. P. O. Box 1113, D-38669 Clausthal-Zellerfeld

One hundred years ago, EINSTEIN published amongst his current scientific considerations also his paper No-dqDepends the Inertia of a Body from his Content on Energy?No-dq [1905/2]. With reference to his paper on Relativity [1905/1], he assumed in a system a body which emitted two particles in opposite direction.

By comparision with earlier investigations by and with the author since his PhD Thesis [Munich 1970; 1972], dissociation of an exciton [1982] as well as sensitization from an adsorbed dye [1980] accross a phase boundary is quite similar to the situation described by EINSTEIN: it corresponds to the emission of two particles from a virtual entity, remaining one part at rest. The calculated mass values are far below the mass of atoms and exclude, therefore, the assumption of WANNIER Excitons.

[1905/1] Ann. Physik 17; [1905/2] Ann Physik 18; Surveys by [1972] H. Gerischer; [1980] P. S. Vincett and G. G. Roberts and [1982] in Electronic Processes in Organic Crystals by M. Pope and Ch. E. Swenberg. .