Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Laser-equipped gas reaction chamber for probing environmentally
  sensitive materials at near atomic scale   Numerous metallurgical and materials science applications depend on
quantitative atomic-scale characterizations of environmentally-sensitive
materials and their transient states. Studying the effect upon materials
subjected to thermochemical treatments in specific gaseous atmospheres is of
central importance for specifically studying a material's resistance to certain
oxidative or hydrogen environments. It is also important for investigating
catalytic materials, direct reduction of an oxide, particular surface science
reactions or nanoparticle fabrication routes. This manuscript realizes such
experiments upon a thermochemical reaction chamber called the Reacthub and
allows for transferring treated materials under cryogenic & ultrahigh vacuum
workflow conditions for characterisation by either atom probe or scanning
Xe+/electron microscopies. Two examples are discussed in the present study. One
protocol was in the deuterium gas charging (25 kPa D2 at 200 {\deg}C) of a
high-manganese twinning-induced-plasticity steel and characterization of the
ingress and trapping of hydrogen at various features (grain boundaries in
particular) in efforts to relate this to the steel's hydrogen embrittlement
susceptibility. Deuterium was successfully detected after gas charging but most
contrast originated from the complex ion FeOD+ signal and the feature may be an
artefact. The second example considered the direct deuterium reduction (5 kPa
D2 at 700 {\deg}C) of a single crystal wuestite sample, demonstrating that
under a standard thermochemical treatment causes rapid reduction upon the
nanoscale. Further studies are required for complete confidence about these
phenomena, but these experiments successfully demonstrate that how an ex-situ
thermochemical treatment can be realised that captures
environmentally-sensitive transient states that can be analysed by atomic-scale
by atom probe microscope.

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The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
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The categories of this paper are: q-fin
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The categories of this paper are: funct-an
1
The categories of this paper are: cs
2
The categories of this paper are: math
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
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The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
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The categories of this paper are: hep-lat
8
The categories of this paper are: hep-ex
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The categories of this paper are: hep-th
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The categories of this paper are: eess
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The categories of this paper are: adap-org
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The categories of this paper are: comp-gas