Computational Physics

24 Quantum scattering with a spherically symmetric potential

10

15

20

25

30

35

40

45

0 0.5 1 1.5 2 2.5 3 3.5

l= 4

l= 5

l= 6

Energy [meV]

Total cross section

[

2 ]

5

50

Figure 2.4. The total cross section shown as function of the energy for a Lennard–

Jones potential modelling the H–Kr system. Peaks correspond to the resonant

scattering states. The total cross section is expressed in terms of the rangeρof the

Lennard–Jones potential.

Total cross section

1 10

Energy [meV]

Figure 2.5. Experimental results as obtained by Toennieset al.[3] for the total

cross section (arbitrary units) of the scattering of hydrogen atoms by krypton atoms

as function of centre of mass energy.