ELASTIC ELECTRON SCATTERING BY SMALL HYDROFLUORCARBON MOLECULES IN THE 
INTERMEDIATE ENERGY RANGE

M. G. P. Homem# and I. Iga*

#Departamento de Fisica, UFSCar, 13565-905, Sao Carlos, Sao Paulo, Brazil
*Departamento de Quimica, UFSCar, 13565-905, Sao Carlos, Sao Paulo, Brazil

In this work, we report an experimental investigation on elastic electron-
hydrofluorcarbon molecule collisions in the intermediate energy range. More
especifically, measured elastic differential, integral and momentum transfer 
cross sections for electron scattering by CHF3 and CF4 in the 100 to 500 eV
energy range are reported. Relative flow technique is used for these
measurements while N2 is used as the secondary standard. The comparison between
our experimental results and available data in the literature is encouraging.