Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Photolysis of n-butyl nitrite and isoamyl nitrite at 355 nm: A
  time-resolved Fourier transform infrared emission spectroscopy and ab initio
  study   We report on the photodissociation dynamics study of n-butyl nitrite
(n-C_4H_9ONO) and isoamyl nitrite ((CH_3)_2C_3H_5ONO) by means of time-resolved
Fourier transform infrared (TR-FTIR) emission spectroscopy. The obtained
TR-FTIR emission spectra of the nascent NO fragments produced in the 355-nm
laser photolysis of the two alkyl nitrite species showed an almost identical
rotational temperature and vibrational distributions of NO. In addition, a
close resemblance between the two species was also found in the measured
temporal profiles of the IR emission of NO and the recorded UV absorption
spectra. The experimental results are consistent with our ab initio
calculations using the time-dependent density functional theory at the
B3LYP/6-311G(d,p) level, which indicate that the substitution of one of the two
{gamma}-H atoms in n-C_4H_9ONO with a methyl group to form (CH_3)_2C_3H_5ONO
has only a minor effect on the photodissociation dynamics of the two molecules.

23
The categories of this paper are: solv-int
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The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
16
The categories of this paper are: stat
6
The categories of this paper are: astro-ph
2
The categories of this paper are: math