Electron transfer processes in biomolecular systems through atom-molecule collisions

Departamento de Fisica, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
Tel: + 351 – 21 294 85 76 (ext. 10570); Fax: + 351 – 21 294 85 49

Website: http://www.df.fct.unl.pt/~pmlv/lcam

Research interests

The main research goals are the study of the dynamics of negative ions formed by charge transfer in atom-molecule collisions with several molecular targets with the special attention to biomolecular systems. We make use of a crossed molecular beam machine, where a neutral hyperthermal potassium beam will cross at right angles an effusive molecular target and the negative ions formed in the interaction region mass spectrometric analysed.

We are particularly interested on the complementary information obtained by this technique and comparisons with electron attachment experiments.

Relevant publications

Inelastic scattering and stopping power of electrons in methane based tissue equivalent materials at intermediate and high energies, 10 – 10000 eV
J C Oller, A Muñoz, J M Pérez, F Blanco, P Limão-Vieira, G Garcia
Chem. Phys. Lett., 421 (2006) 439 – 443.

Water VUV electronic state spectroscopy by synchrotron radiation
R Mota, R Parafita, A Giuliani, M-J Hubin-Franskin, J M C Lourenço, G Garcia, S V Hoffmann, N J Mason, P A Ribeiro, M Raposo, P Limão-Vieira
Chem. Phys. Lett., 416 (2005) 152 – 159.

Positive and negative ion formation via slow electron collisions with 5-bromouridine
S Denifl, P Candori, S Ptasińska, P Limão-Vieira, V Grill, T D Märk and P Scheier
Eur. Phys. J. D, 35 (2005) 391 – 398.

Electron attachment to monomeric and dimeric forms of glycoaldehyde
S Ptasinska, P Limão-Vieira, P Scheier, M Probst and T D Märk
Chem. Phys. Lett., 401 (2005) 227 – 231.

COST P9 Workings group(s) of interest: WG1 and WG3