| E. De Filippo, G. Lanzano, H. Rothard, C. Volant,
D. H. Jakubassa-Amundsen, S. Aiello, A. Anzalone, N.Arena, M. Geraci, F. Giustolisi, A. Pagano |
Doubly differential electron velocity spectra induced by 18$^+$
$^{36}$Ar(95 MeV/u) from thin carbon foils were
measured at GANIL (Caen, France) by means of the ARGOS
multi-detector and the time-of-flight technique. The
spectra allow us to determine absolute singly differential cross
sections as a function of the emission
angle. Absolute doubly differential cross
sections for binary encounter electron ejection from C targets are
compared to a transport theory which is based on the relativistic
electron impact approximation (EIA) for electron production and
which accounts for angular deflection, energy loss, but also
energy straggling of the transmitted electrons. For the thinnest
targets, the measured peak width is in good agreement with
experimental data obtained with a different detection technique.
Theory underestimates the peak width but provides
(within a factor of 2) the correct peak intensity.
For the thickest target, even the peak shape
is well reproduced by theory. |
