Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Search for deviations from the ideal Maxwell-Boltzmann distribution for
  a gas at an interface   The isotropic Maxwell-Boltzmann (M-B) velocity distribution is the accepted
standard for a gas at thermal equilibrium, with the Doppler width considered to
deliver a very precise measurement of the temperature. Nevertheless, the
physical nature of the surface, and the atom-surface interaction, in its
long-range (van der Waals type) regime as well as in its short-range regime
leading to adsorption/desorption mechanisms, are far from the ideal situation
describing the foundation of gas kinetics. Through the development of vapor
spectroscopy at an interface, a high sensitivity to atoms flying nearly
parallel to the gas interface is obtained, and deviations to M-B distribution
could have observable effects, even affecting the ultimate limits to
resolution. We report here on the development of an experiment involving a
dedicated set-up of spatially-separated pump-probe experiment in a narrow cell.
A first series of investigation could not evidence a deviation for Cs atom
velocities at a nearly grazing incidence (typically 1.5 -5{\deg}). We discuss
various technical improvements to increase the sensitivity to atoms flying
parallel to the surface, along with specific spectroscopic information that may
be collected. Alternately, the comparison of standard selective reflection
spectroscopy with simultaneous volume spectroscopy may be a source of
complementary information. At last, we discuss how the Boltzmann energy
distribution, among molecular or atomic levels, may become sensitive to
specific thermal exchanges at the surface, in an equilibrium situation.

1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an