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New stopping power formula for intermediate energy electrons
1Department of Physics, Faculty of Arts and Sciences, Ondokuz Mayis University, Samsun, Turkey. hgumus@omu.edu.tr
Summary
A new electron stopping power formula was developed using modified Bethe-Bloch theory. This formula, incorporating effective charges and energies, accurately predicts electron interactions in various materials.
Area of Science:
- Atomic and Molecular Physics
- Radiation Physics
- Materials Science
Background:
- Accurate calculation of electron stopping power (SP) is crucial for understanding radiation interactions in matter.
- Existing formulas often rely on approximations or empirical data, necessitating improved analytical models.
Purpose of the Study:
- To develop a novel analytical formula for calculating the stopping power of electrons.
- To enhance the accuracy of electron stopping power calculations by incorporating refined parameters.
Main Methods:
- Modification of the Bethe-Bloch stopping power expression.
- Utilizing analytical expressions for effective charge and mean excitation energies of target atoms.
- Employing Sugiyama's semiempirical formula for the effective charge of incident electrons.
- Applying the Bethe approximation and a Thomas-Fermi atomic model for practical calculations.
Main Results:
- An analytical expression for electron stopping power was derived.
- Calculated stopping power values for electrons in H(2)O, H(2), CO(2), N(2), and O(2) were obtained.
- The results show good agreement with experimental data and comparisons with other computational methods.
Conclusions:
- The new stopping power formula provides a reliable analytical method for predicting electron interactions.
- The model's accuracy is validated through comparisons with experimental measurements and established codes.
- This work contributes to a better understanding of electron transport phenomena in various materials.
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