V.P. Zhurenko, S.I. Kononenko, V.I. Muratov
Kharkov National University, Kharkov, Ukraine

V.I. Karas
National Physical and Technical Institute, Kharkov, Ukraine

   We studied experimentally the mechanism of SEE incluced by fast light ions from the both surfaces of metal foil targets. We measured the coefficient of SEE from the beam entrance (g_F) and exit surfaces (g_B) of Al, Cu, Ni targets bombarded by a-particles with the same energy. It was experimentally shown that the coefficient
R =g_F / g_B was estimated to be 1.69±7% for the materials under study. Thus, the flux of the energy transferred from fast ions to the medium electrons moving in the forward direction is 1.7 times as much as in the backward direction.

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