What question did this study set out to answer?

To measure total collision cross sections for helium atoms and derive potential energy functions from these measurements.

Scattering of High-Velocity Neutral Particles. II. Helium-Helium

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To measure total collision cross sections for helium atoms and derive potential energy functions from these measurements.
Measured collision cross sections for helium atoms at energies between 500 and 2100 eV.
Utilized two detectors with different geometric apertures (13.4 and 0.96 minutes).
Calculated effective apertures considering beam shape and intensity distribution.
Derived potential energy functions agree within a factor of 1.3 when compared to geometric apertures directly.
Average function represented as V(r)=7.55×10−12/r5.94 ergs for distances between 1.27A and 1.59A.
Potential energy information aligns with theoretical calculations and measurements of gaseous compressibility.

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Randomized trial measures collision cross sections of helium atoms, indicating derived potential energy functions.

Amdur et al. (1954) studied this question.

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