Kinetic Isotope Effects for the Reactions of Muonic Helium and Muonium with H2

@article{Fleming2011KineticIE,
  title={Kinetic Isotope Effects for the Reactions of Muonic Helium and Muonium with H2},
  author={Donald G Fleming and Donald J Arseneau and Oleksandr Sukhorukov and Jess H. Brewer and Steven L. Mielke and George C. Schatz and Bruce C. Garrett and Kirk A. Peterson and Donald G. Truhlar},
  journal={Science},
  year={2011},
  volume={331},
  pages={448 - 450}
}
Calculated reaction rates for two hydrogen isotopes, one 36 times heavier than the other, agree with experiments at 500 kelvin. The neutral muonic helium atom may be regarded as the heaviest isotope of the hydrogen atom, with a mass of ~4.1 atomic mass units (4.1H), because the negative muon almost perfectly screens one proton charge. We report the reaction rate of 4.1H with 1H2 to produce 4.1H1H + 1H at 295 to 500 kelvin. The experimental rate constants are compared with the predictions of… Expand
Understanding the reaction between muonium atoms and hydrogen molecules: zero point energy, tunnelling, and vibrational adiabaticity
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The analysis of the results shows that the large zero point energy of the MuH product is the key factor for the large KIE observed. Expand
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