Experimentally the collision cross section of metastable states of rare gases with the halogens is similar to that of alkali metals with halogens.
2.
Physically, the steric factor can be interpreted as the ratio of the cross section for reactive collisions to the total collision cross section.
3.
The rotationally averaged collision cross section ( CCS ) which is a physical property of ions reflecting the shape of the ions can be measured accurately on drift tube ion mobility.
4.
Scoles and his colleagues published a series of key papers which include the determination of the energy dependence of the integral collision cross section of He scattered by He [ 3 ], the observation of Rainbow Scattering between two crossed beams of Argon [ 4 ], the first measurement of orbiting resonances in the scattering between two atoms ( Hg and H ) [ 5 ].
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