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Rate measurements for the reaction of H-atoms with the xenon and krypton fluoride molecules.
P!92
342
RATEMEAS-
S FOR THE REACTIOIVOF H-ATOMS WITH THE XEWOE
AND KRYPTOE FLUORIDE MOLECULES.
V.V.Zelenov, A.S.Kukuj, A.F.Dodonov, A.V.Turchin N.B.Aleinikov, S.A.Kashtanov Institute of Energetic Problems of Chemical Physics, Academy of Sciences, 142432 Chernogolouka, Moscow Region, USSR Institute of Chemical Physics, Branch, Academy of Sciences, 142432 Chernogolovka, Moscow Region, USSR Elementary strongly exothermic reactions of H-atoms with the P2, KrP2, XeP2, XeP,, XeF6 molecules useful for chemical lasers have been investigated by mass-spectrometric probing of the diffusion cloud in flow [II . Some ionisation and appearance potentials were defined [2] from experimental ionization efficiency curves. Arrhenius expressions were obtained for the rate constants between 298-505 K.They correspond to an activation energy of 8.92 0.6; ll.e.2;
21.822; 22.625; 28.93.8
kJ/mol for the H + F2,
KrF2, XeF2, XeF,, XeF6 reactions respectively, with the preexponential factor near 10-10cc/molec.c for all rate constants. It was established that HP product of the H+F2 "model" reaction is excited up to 8-th vibrational level while such one of the H+ KrF2 reaction is not vibrationally excited. Thus a second product of H+KrF2 reaction may be eximer KrF(B2z ) with the energy excitation 481.3 kJ/mol which corresponds to sum of the reaction heat and activation energy. Llj Tal'roze V.L.,Dodonov A.F;,Zelenov V.V.,Strunin V.P.-1nt.J. Mass Spectrom. Ion Proc. 1983, v.46, p.123. [2-JRaznikov V.V ,,Dodonov A.F.,Zelenov V.V.-Int.J.Mass Spectrom. Ion Proc. 1986, v-71, p-1.
342
RATEMEAS-
S FOR THE REACTIOIVOF H-ATOMS WITH THE XEWOE
AND KRYPTOE FLUORIDE MOLECULES.
V.V.Zelenov, A.S.Kukuj, A.F.Dodonov, A.V.Turchin N.B.Aleinikov, S.A.Kashtanov Institute of Energetic Problems of Chemical Physics, Academy of Sciences, 142432 Chernogolouka, Moscow Region, USSR Institute of Chemical Physics, Branch, Academy of Sciences, 142432 Chernogolovka, Moscow Region, USSR Elementary strongly exothermic reactions of H-atoms with the P2, KrP2, XeP2, XeP,, XeF6 molecules useful for chemical lasers have been investigated by mass-spectrometric probing of the diffusion cloud in flow [II . Some ionisation and appearance potentials were defined [2] from experimental ionization efficiency curves. Arrhenius expressions were obtained for the rate constants between 298-505 K.They correspond to an activation energy of 8.92 0.6; ll.e.2;
21.822; 22.625; 28.93.8
kJ/mol for the H + F2,
KrF2, XeF2, XeF,, XeF6 reactions respectively, with the preexponential factor near 10-10cc/molec.c for all rate constants. It was established that HP product of the H+F2 "model" reaction is excited up to 8-th vibrational level while such one of the H+ KrF2 reaction is not vibrationally excited. Thus a second product of H+KrF2 reaction may be eximer KrF(B2z ) with the energy excitation 481.3 kJ/mol which corresponds to sum of the reaction heat and activation energy. Llj Tal'roze V.L.,Dodonov A.F;,Zelenov V.V.,Strunin V.P.-1nt.J. Mass Spectrom. Ion Proc. 1983, v.46, p.123. [2-JRaznikov V.V ,,Dodonov A.F.,Zelenov V.V.-Int.J.Mass Spectrom. Ion Proc. 1986, v-71, p-1.