What question did this study set out to answer?

To measure effective total scattering cross sections and determine the repulsive interaction potentials for fast potassium ions colliding with helium, neon, and argon atoms.

September 1, 1972The Journal of Chemical Physics

Scattering of Fast Potassium Ions by Helium, Neon, and Argon

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Authors

IAI. AmdurMassachusetts Institute of Technology EJElena JordanPhysikalisch-Technische Bundesanstalt KCK.-R. ChienTRW (United States)

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Implication

Experimental study reveals repulsive interaction potentials for fast potassium ions in noble gases, indicating discrepancies with existing theoretical models.

Key Points

To measure effective total scattering cross sections and determine the repulsive interaction potentials for fast potassium ions colliding with helium, neon, and argon atoms.
Built a specialized apparatus to measure the total scattering cross sections of potassium ions (K+) with energies ranging from 150 to 2350 eV passing through room-temperature helium, neon, and argon.
Derived repulsive interaction potentials from scattering data using both inverse power and exponential analytical representations across defined interatomic distances.
Determined exponential repulsive potentials: V(r) = 2200 exp(−4.56r) for K+–He (1.18 ≤ r ≤ 1.83 Å), V(r) = 7850 exp(−4.79r) for K+–Ne (1.42 ≤ r ≤ 2.02 Å), and V(r) = 8900 exp(−3.96r) for K+–Ar (1.76 ≤ r ≤ 2.47 Å).
Observed good agreement with recent experimental findings and theoretical calculations for K+–Ar, but found marked disagreements with earlier experimental results and theoretical models for K+–He and K+–Ne.

Cite This Study

Amdur et al. (1972) studied this question.

synapsesocial.com/papers/6a8bb131f19228bbb2fb5b7e https://doi.org/10.1063/1.1678538

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Implication

Experimental study reveals repulsive interaction potentials for fast potassium ions in noble gases, indicating discrepancies with existing theoretical models.

Scattering of Fast Potassium Ions by Helium, Neon, and Argon

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Implication

Key Points

Cite This Study

Scattering of Fast Potassium Ions by Helium, Neon, and Argon

Discussion

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Implication

Key Points

Cite This Study

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