5. Windowed Multipole Library Format

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Attributes
  • filetype (char[]) – String indicating the type of file

  • version (int[2]) – Major and minor version of the data

/<nuclide name>/

Datasets
  • broaden_poly (int[])

    If 1, Doppler broaden curve fit for window with corresponding index. If 0, do not.

  • curvefit (double[][][])

    Curve fit coefficients. Indexed by (window index, coefficient index, reaction type).

  • data (complex[][])

    Complex poles and residues. Each pole has a corresponding set of residues. For example, the \(i\)-th pole and corresponding residues are stored as

    \[\text{data}[:,i] = [\text{pole},~\text{residue}_1,~\text{residue}_2, ~\ldots] \]

    The residues are in the order: scattering, absorption, fission. Complex numbers are stored by forming a type with “\(r\)” and “\(i\)” identifiers, similar to how h5py does it.

  • E_max (double)

    Highest energy the windowed multipole part of the library is valid for.

  • E_min (double)

    Lowest energy the windowed multipole part of the library is valid for.

  • spacing (double)
    \[\frac{\sqrt{E_{max}} - \sqrt{E_{min}}}{n_w} \]

    Where \(E_{max}\) is the maximum energy the windows go up to. \(E_{min}\) is the minimum energy, and \(n_w\) is the number of windows, given by windows.

  • sqrtAWR (double)

    Square root of the atomic weight ratio.

  • windows (int[][])

    The poles to start from and end at for each window. windows[i, 0] and windows[i, 1] are, respectively, the indexes (1-based) of the first and last pole in window i.