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# Results Files Documentation
This page provides an overview of the output files generated by the **WPEM** software for diffraction refinement, background fitting, amorphous component analysis, solid solution modeling, and simulation tasks.
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## General Information
All results are saved in the **working directory** (`work_dir`), which can be specified by the user during execution. If not specified, outputs default to the current directory.
### File Naming Conventions
* **Prefix**: Indicates the task type (e.g., `XRD`, `Background`, `Amorphous`, etc.).
* **Suffix**: Usually includes a timestamp to prevent file overwriting.
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## Output Files by Function
### 1. **Background Fitting**
**Folder**: `ConvertedDocuments`
* `bac.csv`: Fitted background intensities.
* `no_bac_intensity.csv`: Diffraction signals after background removal.
* `bac_points.csv`: Selected background points.
* `intensity_fft.csv`: Diffraction signals processed by Fast Fourier Transform.
* `de_backgroundfittingcurve.png`: Plot of the original data, fitted background, and background-subtracted signals.
* `backgroundfittingcurve.png`: Visualization showing the raw data, selected background points, and the fitted background curve.
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### 2. **XRD Refinement**
**Folder**: `WPEMFittingResults`
* `CrystalSystem0_WPEMout_<time>.csv`: Refined crystal information, including:
* `code`: Indicates Kα1 or Kα2 origin.
* `H`, `K`, `L`: Miller indices.
* `wi`, `Ai`, `L_gamma_i`, `G_sigma2_i`: Peak shape parameters (refer to the WPEM paper for details).
* `mu_i`: Peak positions.
* `intensity`: Peak intensities.
* `system0`, `system1`, etc.: Refers to different phases.
* `hkl0_<time>.csv`: Diffraction indices for each peak in phase 0.
* `WPEMfittingProfile_<time>.csv`: WPEM-generated fitting profile.
* `WPEMPeakParas_<time>.csv`: Peak location and shape parameters, with profile fitting quality metrics.
* `ResidualWPEM_fittingresult_<time>.png`: Plot comparing fitted results with experimental data.
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### 3. **Amorphous Fitting**
**Folder**: `DecomposedComponents`
* `Amorphous.csv`: Extracted amorphous signals.
* `M_Amorphous_componentsX.csv`: Identified amorphous peak components (X = index).
* `upbackground.csv`: Updated background after amorphous subtraction.
* `Decomposed_peaks.png`: Visualization of decomposed crystalline and amorphous components.
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### 4. **CIF Parsing**
**Folder**: `output_xrd`
* `NAMEHKL.csv`: Calculated diffraction indices, angles, and theoretical intensities.
* `NAME_Extinction_peak.csv`: List of extinction peaks caused by geometrical and systematic extinction.
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### 5. **Solid Solution Modeling**
**Folder**: `WPEMSitOpt`
* `substitutional.png`: Fitting result of the optimized solid solution structure.
* `DecompositionPlot.png`: Overlay of decomposed peaks and experimental data.
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### 6. **XRD Simulation**
**Function**: `XRDSimulation`
* `Simulated_XRDPattern.csv`: Simulated XRD pattern based on the provided CIF file.
* `SimulatedPeaks.csv`: Simulated peak positions and intensities.
* `SimulationPlot.png`: Visualization of the simulated XRD pattern.
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### 7. **CIF Preprocessing**
**Function**: `CIFpreprocess`
* `Processed_CIF_LatticeConstants.csv`: Extracted lattice constants from CIF.
* `Processed_CIF_Structure.csv`: Atomic positions and unit cell parameters.
* `ProcessedCIFPlot.png`: Visualization of the crystal structure.
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### 8. **Substitutional Search**
**Function**: `SubstitutionalSearch`
* `SubstitutionalSearchResults.csv`: Possible substitutional configurations and their likelihoods.
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### 9. **XPS Analysis**
**Folder**: `XPSFittingProfile`
* `XPSfittingProfile_<time>.csv`: Fitted XPS spectrum data.
* `XPSPeakParas_<time>.csv`: Peak parameters including binding energies, areas, shapes, and fitting quality.
* `WPEM_fittingresult.png`: Decomposed results of individual photoelectron peaks.
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### 10. **EXAFS Analysis**
**Folder**: `XAFS` / `WXAFS`
* `FFT_EXAFS_unknown.png`: Radial distribution function representing local atomic structure.
* `interactive_plot.html`: Interactive 2D wavelet transform visualization.
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## Notes
* All files are saved with descriptive names based on their function and timestamp.
* Figures are generated in `.png` format for easy interpretation.
* CSV files are widely compatible with data analysis tools such as Excel, Python, and MATLAB.
For further reference and source code, please visit the [WPEM GitHub Repository](https://github.com/Bin-Cao/PyWPEM).
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