Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Theoretical Treatments of the Bound-Free Contribution and Experimental
  Best Practice in X-ray Thomson Scattering from Warm Dense Matter   By comparison with high-resolution synchrotron x-ray experimental results, we
assess several theoretical treatments for the bound-free (core-electron)
contribution to x-ray Thomson scattering (i.e., also known as nonresonant
inelastic x-ray scattering). We identify an often overlooked source of
systematic error in the plane- wave form factor approximation (PWFFA) used in
the inference of temperature, ionization state, and free electron density in
some laser-driven compression studies of warm dense matter. This error is due
to a direct violation of energy conservation in the PWFFA. We propose an
improved practice for the bound-free term that will be particularly relevant
for XRTS experiments performed with somewhat improved energy resolution at the
National Ignition Facility or the Linac Coherent Light Source. Our results
raise important questions about the accuracy of state variable determination in
XRTS studies, given that the limited information content in low-resolution XRTS
spectra does not strongly constrain the models of electronic structure being
used to fit the spectra.

15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph