Semiempirical model for generating tungsten target x-ray spectra.

Area of Science:

• Atomic and Molecular Physics
• Medical Physics
• X-ray Spectroscopy

Background:

• Accurate modeling of x-ray spectra is crucial for applications in medical imaging and industrial radiography.
• Previous models often simplified x-ray production processes, leading to discrepancies with experimental data.
• Tungsten targets are widely used in x-ray tubes due to their high atomic number and melting point.

Purpose of the Study:

• To develop an improved semiempirical model for generating tungsten target x-ray spectra.
• To incorporate realistic physical processes, including x-ray production at varying target depths.
• To optimize model parameters using experimental data for enhanced accuracy.

Main Methods:

• A semiempirical model was developed, accounting for bremsstrahlung and characteristic x-ray production at different depths within the tungsten target.
• Nonlinear least-squares techniques were employed to determine optimal model parameters by fitting to experimental x-ray spectra.
• The model's performance was validated by comparing calculated spectra with measured data across various x-ray tube potentials and target angles.

Main Results:

• The enhanced model demonstrated good agreement between calculated and measured x-ray tube spectra and output.
• This improved accuracy was observed across a wide range of x-ray tube potentials and for different target angles.
• The model significantly outperformed previously published methods in predicting tungsten target x-ray spectra.

Conclusions:

• The presented semiempirical model provides a more accurate representation of tungsten target x-ray spectra.
• Accounting for depth-dependent x-ray production is essential for improving spectral generation models.
• The optimized model offers a valuable tool for applications requiring precise x-ray spectrum prediction.