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Molybdenum target x-ray spectra: a semiempirical model
D M Tucker1, G T Barnes, X Z Wu
1Department of Biomedical Engineering, School of Engineering, University of Alabama, Birmingham 35294.
Medical Physics
|May 1, 1991
Summary
A new semiempirical model accurately generates molybdenum x-ray spectra by considering photon production depth. This model, an extension of previous work, shows good agreement with experimental data for various conditions.
Area of Science:
- Medical Physics
- Materials Science
Background:
- X-ray spectra are crucial for diagnostic and therapeutic applications.
- Accurate modeling of X-ray spectra is essential for optimizing radiation dose and image quality.
- Previous models existed for tungsten targets, but a dedicated model for molybdenum was needed.
Purpose of the Study:
- To develop and validate a semiempirical model for generating molybdenum target X-ray spectra.
- To extend a previously developed tungsten model to molybdenum.
- To account for the depth of production for bremsstrahlung and characteristic X-ray photons.
Main Methods:
- Developed a semiempirical model for molybdenum X-ray spectra generation.
- Extended a prior model used for tungsten targets.
- Determined optimal model parameters using nonlinear least-squares fits to experimental data.
- Incorporated depth of production for bremsstrahlung and characteristic X-ray photons.
Main Results:
- Achieved good agreement between the model predictions and experimental data.
- Demonstrated the model's ability to reproduce results consistent with tabulated spectra.
- Validated the model's accuracy across different X-ray tube angles and filtration conditions.
Conclusions:
- The presented semiempirical model provides accurate molybdenum X-ray spectra.
- The model is a valuable tool for applications requiring precise X-ray spectral information.
- The methodology can be adapted for other target materials and experimental geometries.