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This research aims to measure the scattering of high-velocity argon beams and derive interaction potentials for Ar–Ar, Ar–He, and Ar–H2 systems.

Scattering of High-Velocity Neutral Particles. XVI. Ar–Ar, Ar–He, and Ar–H2

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Measurements report interaction potentials for argon scattering with helium and hydrogen, highlighting previous gaps in data.

This research aims to measure the scattering of high-velocity argon beams and derive interaction potentials for Ar–Ar, Ar–He, and Ar–H2 systems.
Conducted measurements of argon scattering between 200–1500 eV with room-temperature argon, helium, and hydrogen.
Derived interaction potentials for Ar–Ar, Ar–He, and Ar–H2 at specific internuclear distances, analyzing multiple measurements in the same apparatus.
Compared results with existing scattering and diffusion coefficients to validate new potentials.
The derived Ar–Ar potential shows V(r) = 3.25 × 10^3 / r^9.97 eV for 1.96 Å < r < 2.41 Å, aligning with prior studies.
For Ar–He, the potential is V(r) = 22.2 / r^5.42 eV for 1.40 Å < r < 1.81 Å, consistent with previous results and diffusion studies.
The Ar–H2 potential yields V(r) = 159 / r^6.28 eV for 1.81 Å < r < 2.36 Å, approximately double previous findings.

Colgate et al. (1969) studied this question.

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