ADOC Symposium – July 5, 2019 – CNRS Orléans

The association of doctoral students of the Center for Molecular Biophysics (ADOC) is organizing its 17th scientific symposium on Friday, July 5, 2019, whose theme is "Science Together".

This conference will take place in the amphitheater Charles Sadron CNRS.

Consult the event website

Poster

Programm

inscriptions

PhD students and post-docs are invited to present their work during a poster session. To be sent an abstract before June 25, 2019, preferentially in English (French tolerated), as well as the title and the names of the authors at the following address: cbmadoc@cnrs-orleans.fr

 

 

A new interpretation of neutron scattering spectra

The article presents a new interpretation of neutron scattering spectra by molecular systems that has much in common with the Franck-Condon theory describing the vibrational transitions in a molecule after absorption or emission of a photon. The principal elements are the quantum probabilities for the transitions between the energy levels of the studied system, which are induced by diffusion of a neutron. In this case, the fundamental concept of "energy landscapes", which was introduced by Hans Frauenfelder to describe the internal dynamics of proteins in terms of "jumps" between the minima of their (free) internal energy, can be integrated in the analysis of neutron scattering spectra by complex systems in general. The theory also provides an intuitive physical interpretation of Van Hove's correlation functions in the quantum regime, as well as their classical limit, which is usually considered in the analysis of quasi-elastic spectra of neutrons from proteins and other complex molecular systems.