  A relational database has been developed based on the original ($n,n'\gamma$)
work carried out by A. M. Demidov $et$ $al$., at the Nuclear Research Institute
in Baghdad, Iraq [$"Atlas$ $of$ $Gamma$-$Ray$ $Spectra$ $from$ $the$
$Inelastic$ $Scattering$ $of$ $Reactor$ $Fast$ $Neutrons"$, Nuclear Research
Institute, Baghdad, Iraq (Moscow, Atomizdat 1978)] for 105 independent
measurements comprising 76 elemental samples of natural composition and 29
isotopically-enriched samples. The information from this Atlas includes:
$\gamma$-ray energies and relative intensities; nuclide and level data
corresponding to the residual nucleus and meta data associated with the target
sample that allows for the extraction of the flux-weighted ($n,n'\gamma$) cross
sections for a given transition relative to a defined value. The optimized
angular-distribution-corrected fast-neutron flux-weighted partial $\gamma$-ray
cross section for the production of the 846.8-keV $2^{+}_{1} \rightarrow
0^{+}_{\rm gs}$ $\gamma$-ray transition in $^{56}$Fe, determined to be $\langle
\sigma_{\gamma} \rangle = 143(29)$ mb, is used for this purpose. However,
different values for the adopted cross section can be readily implemented to
accommodate user preference based on revised determinations of this quantity.
The Atlas ($n,n'\gamma$) data has been compiled into a series of CSV-style
ASCII data sets and a suite of Python scripts have been developed to build and
install the database locally. The database can then be accessed directly
through the SQLite engine, or using alternative methods such as the Jupyter
Notebook Python-browser interface. Several examples exploiting different
interaction methodologies are distributed with the complete software package.
