Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Parallax diagnostics of radiation source geometric dilution for iron
  opacity experiments   Experimental tests are in progress to evaluate the accuracy of the modeled
iron opacity at solar interior conditions [J.E. Bailey et al., Phys. Plasmas
16, 058101 (2009)]. The iron sample is placed on top of the Sandia National
Laboratories z-pinch dynamic hohlraum (ZPDH) radiation source. The samples are
heated to 150 - 200 eV electron temperatures and 7e21 - 4e22 e/cc electron
densities by the ZPDH radiation and backlit at its stagnation [T. Nagayama et
al., Phys. Plasmas 21, 056502 (2014)]. The backlighter attenuated by the heated
sample plasma is measured by four spectrometers along +/- 9 degree with respect
to the z-pinch axis to infer the sample iron opacity. Here we describe
measurements of the source-to-sample distance that exploit the parallax of
spectrometers that view the half-moon-shaped sample from +/-9 degree. The
measured sample temperature decreases with increased source-to-sample distance.
This distance must be taken into account for understanding the sample heating.

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The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat