Showing papers by "James B. Burkholder published in 1998"
TL;DR: In this paper, the rate coefficient for the reaction O(3P) with ClONO2, k1, was measured between 202 and 325 K using two methods: pulsed laser photolysis with time-resolved atomic resonance fluorescence detection of the O atoms and pulsed LPL with long-path tunable diode laser absorption for detection of NO3 radicals.
Abstract: The rate coefficient for the reaction O(3P) with ClONO2, k1, was measured between 202 and 325 K using two methods: pulsed laser photolysis with time-resolved atomic resonance fluorescence detection of the O atoms and pulsed laser photolysis with long-path tunable diode laser absorption for detection of NO3 radicals. The measured rate coefficient is summarized by k1 = (4.5 ± 1.4) × 10-12 exp[(−900 ± 80)/T] cm3 molecule-1 s-1, with k1(298 K) = (2.2 ± 0.2) × 10-13 cm3 molecule-1 s-1. The yield of NO3 radical in this reaction was measured to be essentially unity. Our results are compared with those from previous studies.
10 citations
TL;DR: In this paper, a Fourier transform infrared spectrometer coupled to a temperature regulated long path absorption cell was used to examine the gas phase reactions BrONO2 and ClONO 2 + O3 → Products (k1 and k3) at 235±2 K and 700 Torr N2.
Abstract: The gas phase reactions BrONO2 and ClONO2 + O3 → Products (k1 and k3) were examined at 235±2 K and 700 Torr N2 using a Fourier transform infrared spectrometer coupled to a temperature regulated long path absorption cell. The loss of BrONO2 and ClONO2 were measured to be independent of the O3 concentration yielding k1 < 1 × 10−20 cm³ molecule−1 s−1 and k3 < 4 × 10−21 cm³ molecule−1 s−1.
2 citations