Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Kinetics of the simplest Criegee intermediate reaction with ozone
  studied by mid-infrared quantum cascade laser spectrometer   The kinetics of CH$_2$OO reaction with ozone has been studied by monitoring
CH$_2$OO with time-resolved infrared (IR) absorption spectroscopy, which
utilized fast chirped IR pulse train from a quantum cascade laser [J. Chem.
Phys. 146, 244302 (2017)]. CH$_2$OO was prepared by photolyzing a gas mixture
of CH$_2$I$_2$/O$_2$/O$_3$ at 352 nm; the photolysis wavelength was chosen to
minimize the photodissociation of O$_3$. The measured rate coefficient at 298 K
and 30 Torr is (6.7$\pm$0.5)x10$^{-14}$ cm$^3$sec$^{-1}$, independent of
pressure from 30 to 100 Torr. The result indicates that previous ab initio
calculations either underestimated or overestimated this reaction rate by one
order of magnitude or more. The result also implies that in laboratory studies
of ozonolysis of alkenes, the reaction of Criegee intermediate with ozone may
play a role. However, this reaction would not compete with other CH$_2$OO sinks
in the atmosphere.

28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
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The categories of this paper are: funct-an