Welcome to the ILENA Homepage

The Imager for Low Energetic Neutral Atoms experiment (ILENA) at the Physikalisches Institut of the University of Bern is used to evaluate charge state conversion surfaces for low energy neutral particle instruments.

In the experiment an ion beam is reflected at grazing incidence from a sample surface. The reflected particles are analyzed using a retarding potential analyzer and a position sensitive multi channel plate assembly providing coarse energy and detailed angular information. Electrostatic and magnetic deflection systems at the sample allow to distinguish between neutral and charged primary and reflected atoms, secondary electrons, and sputtered particles. Typical primary particles include oxygen and hydrogen atoms and molecules and noble gases at energies from 1500eV down to 10eV per atom.

There are images of the experiment available as well as a list of publications that contain data obtained with the ILENA experiment.


Physics Institute, Space Research and Planetary Sciences
Sidlerstrasse 5, 3012 Bern, Switzerland

Tel: +41 (0) 31 631 4411
Fax: +41 (0) 31 631 4405