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H. Winter, Hp. Winter:
"Classical model of kinetic electron emission near threshold induced by impact of atomic projectiles on a free-electron gas metal";
Europhys. Lett., 62 (2003), S. 739 - 745.

We present a simple classical model fcr the threshold behaviour of the kinetic electron emission caused by collisions of atomic projectiles with a metal. Electron emission close to threshold is dominatet by niaximum energy transfer in binary collisions and from conservation laws and phase space considerations we derive the threshold behaviour for the kinetic electron emission and the mean electron energy transfer, which compare well with recent experimental studies on electron emission from Al(111) under grazing impact of light neutral atoms.

http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC04405682