TY - JOUR
T1 - Electron-induced synthesis of ozone in a dioxygen matrix
AU - Lacombe, S.
AU - Cemic, F.
AU - Jacobi, K.
AU - Hedhili, Mohamed Nejib
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.
UR - http://www.scopus.com/inward/record.url?scp=0031210118&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.79.1146
DO - 10.1103/PhysRevLett.79.1146
M3 - Article
AN - SCOPUS:0031210118
SN - 0031-9007
VL - 79
SP - 1146
EP - 1149
JO - Physical Review Letters
JF - Physical Review Letters
IS - 6
ER -