Electron-induced synthesis of ozone in a dioxygen matrix

S. Lacombe; F. Cemic; K. Jacobi; M. N. Hedhili; Y. Le Coat; R. Azria; M. Tronc

doi:10.1103/PhysRevLett.79.1146

Electron-induced synthesis of ozone in a dioxygen matrix

S. Lacombe, F. Cemic, K. Jacobi, M. N. Hedhili, Y. Le Coat, R. Azria, M. Tronc

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Abstract

Ozone (O₃) was synthesized in the condensed phase induced by electron bombardment of multilayer films of molecular oxygen condensed at temperatures below 30 K on metal surfaces. O₃ formation was demonstrated by the observation of the asymmetric stretching (ν₃) and bending (ν₂) normal modes of vibration in a high-resolution electron energy-loss spectroscopy experiment, and by characteristic changes in electron-stimulated desorption of O^-. The threshold electron energy for the O₃ formation is found at 3.5+/-0.2 eV. It corresponds to the formation of O(³P) associated with O-\(²P\) by dissociative electron attachment at condensed O₂, followed by the third body reaction O+O₂+O₂→O₃+O₂. Above 5.1 eV bombarding energy, dissociative excitation of the O*₂ (c¹Σ^-_u, C³Δ_u, A³Σ⁺_u, B³Σ^-_u) states is the main source of atomic oxygen O(³P) or O(¹D) involved in the O₃ synthesis.

Original language	English (US)
Pages (from-to)	1146-1149
Number of pages	4
Journal	Physical Review Letters
Volume	79
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.79.1146
State	Published - Jan 1 1997
Externally published	Yes

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General Physics and Astronomy

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title = "Electron-induced synthesis of ozone in a dioxygen matrix",

abstract = "Ozone (O3) was synthesized in the condensed phase induced by electron bombardment of multilayer films of molecular oxygen condensed at temperatures below 30 K on metal surfaces. O3 formation was demonstrated by the observation of the asymmetric stretching (ν3) and bending (ν2) normal modes of vibration in a high-resolution electron energy-loss spectroscopy experiment, and by characteristic changes in electron-stimulated desorption of O-. The threshold electron energy for the O3 formation is found at 3.5+/-0.2 eV. It corresponds to the formation of O(3P) associated with O-\(2P\) by dissociative electron attachment at condensed O2, followed by the third body reaction O+O2+O2→O3+O2. Above 5.1 eV bombarding energy, dissociative excitation of the O*2 (c1Σ-u, C3Δu, A3Σ+u, B3Σ-u) states is the main source of atomic oxygen O(3P) or O(1D) involved in the O3 synthesis.",

author = "S. Lacombe and F. Cemic and K. Jacobi and Hedhili, {M. N.} and {Le Coat}, Y. and R. Azria and M. Tronc",

year = "1997",

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doi = "10.1103/PhysRevLett.79.1146",

language = "English (US)",

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T1 - Electron-induced synthesis of ozone in a dioxygen matrix

AU - Lacombe, S.

AU - Cemic, F.

AU - Jacobi, K.

AU - Hedhili, M. N.

AU - Le Coat, Y.

AU - Azria, R.

AU - Tronc, M.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - Ozone (O3) was synthesized in the condensed phase induced by electron bombardment of multilayer films of molecular oxygen condensed at temperatures below 30 K on metal surfaces. O3 formation was demonstrated by the observation of the asymmetric stretching (ν3) and bending (ν2) normal modes of vibration in a high-resolution electron energy-loss spectroscopy experiment, and by characteristic changes in electron-stimulated desorption of O-. The threshold electron energy for the O3 formation is found at 3.5+/-0.2 eV. It corresponds to the formation of O(3P) associated with O-\(2P\) by dissociative electron attachment at condensed O2, followed by the third body reaction O+O2+O2→O3+O2. Above 5.1 eV bombarding energy, dissociative excitation of the O*2 (c1Σ-u, C3Δu, A3Σ+u, B3Σ-u) states is the main source of atomic oxygen O(3P) or O(1D) involved in the O3 synthesis.

AB - Ozone (O3) was synthesized in the condensed phase induced by electron bombardment of multilayer films of molecular oxygen condensed at temperatures below 30 K on metal surfaces. O3 formation was demonstrated by the observation of the asymmetric stretching (ν3) and bending (ν2) normal modes of vibration in a high-resolution electron energy-loss spectroscopy experiment, and by characteristic changes in electron-stimulated desorption of O-. The threshold electron energy for the O3 formation is found at 3.5+/-0.2 eV. It corresponds to the formation of O(3P) associated with O-\(2P\) by dissociative electron attachment at condensed O2, followed by the third body reaction O+O2+O2→O3+O2. Above 5.1 eV bombarding energy, dissociative excitation of the O*2 (c1Σ-u, C3Δu, A3Σ+u, B3Σ-u) states is the main source of atomic oxygen O(3P) or O(1D) involved in the O3 synthesis.

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DO - 10.1103/PhysRevLett.79.1146

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SP - 1146

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JO - Physical Review Letters

JF - Physical Review Letters

IS - 6

ER -

Electron-induced synthesis of ozone in a dioxygen matrix

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