Fundamentals of Ion-Solid Interaction - SPIRIT
Fundamentals of Ion-Solid Interaction - SPIRIT
Fundamentals of Ion-Solid Interaction - SPIRIT
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Spatial Structure <strong>of</strong> Cascades<br />
E 0<br />
Light ions, high energies Heavy ions, low energies<br />
T<br />
T Nuclear Energy Transfer<br />
E 0<br />
T<br />
Spatial deposition <strong>of</strong> energy in cascade is <strong>of</strong>ten described by a Gaussian rotational ellipsoid<br />
E 0<br />
R D<br />
x,y<br />
z<br />
E0 <br />
3 2 2 <br />
z - R <br />
2 2 2<br />
D x y<br />
Dr <br />
exp -<br />
2<br />
2<br />
2 z 2 <br />
z x<br />
x<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
F 2<br />
(E 0) total energy deposited into nuclear collisions<br />
R D mean depth <strong>of</strong> nuclear energy deposition<br />
(exact values for R D, x and z best from collisional<br />
computer simulation)<br />
Similar average topology<br />
for multiple ion incidence<br />
Institute <strong>of</strong> <strong>Ion</strong> Beam Physics and Materials Research Pr<strong>of</strong>. Wolfhard Möller
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