Home Print this page Phone directory Site Map Credits RSS feed Twitter Maps Contact us Phone directory Webmail Intranet Logo

Home > Seminars and Workshops > Past seminars, PhD & HDR defense > 2013 > Séminaires 2013 > Le mercredi 22 mai à 11 heures

Le mercredi 22 mai à 11 heures

Ilya Fabrikant (Department of Physics and Astronomy University of Nebraska-Lincoln) RECENT PROGRESS IN THE THEORY OF DISSOCIATIVE ELECTRON ATTACHMENT: FROM DIATOMICS TO BIOMOLECULES

Lieu : Palaiseau, salle de conférences de l’aile 0 (ex LIX)

Recent renewed interest to the dissociative electron attachment (DEA) processes has been stimulated by the role of low-energy electrons in low-temperature and fusion plasmas, atmospheric science and radiation damage. In the present talk we will discuss DEA processes starting with simple diatomic molecules, then we will switch to polyatomic chlorine-containing molecules, and finally will discuss electron induced hydrogen loss in a few simple biological molecules: formic acid, uracil, thymine, and aminobutanoic acid. The DEA process in these systems is controlled by shape resonances of the A1 symmetry whose width is very large. Due to the long-range (dipolar and polarization) interaction between the incoming electron and the molecule sharp vibrational Feshbach resonances and threshold cusps appear at the vibrational excitation thresholds which influence vibrational excitation processes.


transparent
Tutelles : CNRS Ecole Polytechnique Sorbonne Université Université Paris Sud Observatoire de Paris Convention : CEA
transparent
©2009-2019 Laboratoire de Physique des Plasmas (LPP)

Legal notices
Website operator: Laboratoire de Physique des Plasmas, Ecole Polytechnique route de Saclay F-91128 PALAISEAU CEDEX
Website host: Laboratoire de Physique des Plasmas, Ecole Polytechnique route de Saclay F-91128 PALAISEAU CEDEX
Managing editor: Pascal Chabert (Director)