MEASUREMENT OF THE TOTAL CROSS-SECTION FOR ELECTRON-IMPACT ON Cs USING
COLD TRAPPED ATOMS

D. M. B. P. Milori, J. R. Garbin, A. M. Tuboy and V. S. Bagnato

Instituto de F\'{\i}sica de S\~ao Carlos
Universidade de S\~ao Paulo
Cx. Postal 369 - S\~ao Carlos -SP - Brasil
13.560 - 970

Using a sample of cold trapped Cs-atoms and an electron gum, we have
measured the total cross-section for electron scattering in the range
from 80 to 500 eV. In this presentation we show details of the technique

and the obtained results.