Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dual-probe 1-d hybrid fs/ps rotational CARS for simultaneous single-shot
  temperature, pressure, and O2/N2 measurements   We employ dual-probe 1-d fs/ps hybrid rotational coherent anti-Stokes Raman
spectroscopy to investigate simultaneous temperature, pressure, and O2/N2
measurements for gas-phase diagnostics. The dual-probe HRCARS technique allows
for simultaneous measurements from the time and frequency-domain. A novel
approach for measuring pressure, which offers high accuracy (<1%) and precision
(0.42%) is presented. The technique is first demonstrated in a chamber for a
range of pressures (1-1.5 bar). This technique shows an impressive capability
of resolving 1-d pressure gradients arising from a N2 jet impinging on a
surface, both in laminar and turbulent conditions. The technique is shown to be
capable of resolving single-shot pressure gradients (0.04 bar/mm) originating
from kinetic energy conversion to pressure, and resolves characteristic O2/N2
structures from laminar and turbulent mixing.

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The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an