Mass-Spectrometric Determination of Rate Constants for H-Atom Reactions with Cl2 and F2

Rate Measurements for the Reaction H + Cl2 → HCl + Cl by Lyman‐α Fluorescence

“…In 1969/70 absolute rate measurements of reaction (1) were reported by Albright et al [14] and by Stedman et al…”

Investigation of InP etching mechanisms in a Cl2/H2 inductively coupled plasma by optical emission spectroscopy

“…͑R7͒ is a fast reaction since values of the second-order rate constant k 1 around of 2 ϫ 10 −11 cm 3 molecule −1 s −1 have generally been reported in literature. 20 Berho et al 21 measured a rate constant of 2 ϫ 10 −11 cm 3 molecule −1 s −1 at 300 K, and have derived an estimation of k 1 from 2 ϫ 10 −11 to 4 ϫ 10 −11 cm 3 molecule −1 s −1 for a gas temperature varying from 300 to 600 K. In an older paper, Albright et al, 22 reported measured k 1 values of 3 ϫ 10 −11 to 10ϫ 10 −11 cm 3 molecule −1 s −1 for temperatures from 300 to 500 K, and a value of 13 ϫ 10 −11 cm 3 molecule −1 s −1 could be extrapolated for a temperature of 600 K. The rate constants k 2 and kЈ 2 for reaction ͑R8͒ and reverse reaction ͑R9͒ are lower than k 1 by more than one order of magnitude. 20,23 Typical values for k 2 lie in the range from 1 ϫ 10 −14 to 2.5ϫ 10 −14 cm 3 molecule −1 s −1 at 300 K, and from 7 ϫ 10 −13 to 15ϫ 10 −13 cm 3 molecule −1 s −1 at 600 K. The rate constant kЈ 2 is typically of the same order of k 2 , since typical values lie in the range from 5 to 13ϫ 10 −13 cm 3 molecule −1 s −1 at 600 K. The first reaction to be considered in a kinetic model is consequently reaction ͑R7͒.…”

Real wave packet and flux analysis studies of the H + F2 → HF + F reaction

“… Arrhenius plots of rate constants. The red line shows the initial state selected rate constant for the H + F 2 ( v = 0, j = 0) derived from the integral cross sections in Figure 8, black line shows the thermal rate constants calculated from the cumulative reaction probabilities33 while blue circles3 and black squares4 are experimental results. [Color figure can be viewed in the online issue, which is available at wileyonlinelibrary.com.]…”

“…The HF 2 and FHF radical systems has recently gained an increasing interest due to their importance in laser technology. A number of experimental and theoretical studies have been performed on the structure and the stability of these radicals 1–8. Several ab initio quantum mechanical calculations of the potential energy surface have been carried out.…”