Tunneling states in methane at high pressures

J. Eckert; C. R. Fincher; J. A. Goldstone; W. Press

doi:10.1063/1.442393

Tunneling states in methane at high pressures

J. Eckert, C. R. Fincher, J. A. Goldstone, W. Press

Chemistry and Biochemistry

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Abstract

Rotational tunneling states in phases II and III of solid CH₄ were studied by inelastic neutron scattering techniques at 8 K and pressures up to 850 bar. The tunnel energies were found to depend strongly on pressure, while the rotational peak of the disordered molecules shifts little with pressure up to the II-III phase transition. In phase III, additional intensity was found at about 0.18 meV, which we interpret as tunneling states for those molecules that are disordered in phase II.

Original language	English
Pages (from-to)	3012-3016
Number of pages	5
Journal	The Journal of Chemical Physics
Volume	75
Issue number	6
DOIs	https://doi.org/10.1063/1.442393
State	Published - 1981

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title = "Tunneling states in methane at high pressures",

abstract = "Rotational tunneling states in phases II and III of solid CH4 were studied by inelastic neutron scattering techniques at 8 K and pressures up to 850 bar. The tunnel energies were found to depend strongly on pressure, while the rotational peak of the disordered molecules shifts little with pressure up to the II-III phase transition. In phase III, additional intensity was found at about 0.18 meV, which we interpret as tunneling states for those molecules that are disordered in phase II.",

author = "J. Eckert and Fincher, {C. R.} and Goldstone, {J. A.} and W. Press",

year = "1981",

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AU - Goldstone, J. A.

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N2 - Rotational tunneling states in phases II and III of solid CH4 were studied by inelastic neutron scattering techniques at 8 K and pressures up to 850 bar. The tunnel energies were found to depend strongly on pressure, while the rotational peak of the disordered molecules shifts little with pressure up to the II-III phase transition. In phase III, additional intensity was found at about 0.18 meV, which we interpret as tunneling states for those molecules that are disordered in phase II.

AB - Rotational tunneling states in phases II and III of solid CH4 were studied by inelastic neutron scattering techniques at 8 K and pressures up to 850 bar. The tunnel energies were found to depend strongly on pressure, while the rotational peak of the disordered molecules shifts little with pressure up to the II-III phase transition. In phase III, additional intensity was found at about 0.18 meV, which we interpret as tunneling states for those molecules that are disordered in phase II.

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Tunneling states in methane at high pressures

Abstract

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