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Stopping Power Calculations of Compounds by Using Thomas-Fermi-Dirac-Weizsäcker Density Functional

100%

Tufan M., Gűműş H.

Acta Physica Polonica A

2008

vol. 114

issue 4

703-711

Electronic stopping power of compounds was calculated by using the Thomas-Fermi-Dirac-Weizsäcker density functional. Bragg's rule was employed to determine stopping power of compounds from the elemental stopping power results. Calculations were done for Be, B, O, and Si ions in Al₂O₃, SiO₂, and CO₂ targets by using the Thomas-Fermi-Dirac-Weizsäcker density functional. The obtained results were compared with other Thomas-Fermi based theoretical calculations and show that using Thomas-Fermi-Dirac-Weizsäcker density functional in stopping power calculations yields reasonably accurate results in especially light systems (with respect to the number of electrons in the system).

Stopping Power Calculations for Partially Stripped Projectiles in High Energy Region

81%

Tufan M., Köroğlu A., Gümüş H.

Acta Physica Polonica A

2005

vol. 107

issue 3

459-472

The electronic stopping cross-section is calculated in the spirit of the Bethe theory. Interaction potential between projectile and target is regarded to have a Coulombic character and we have modified it to take into account velocity dependences on a number of bound electrons of projectile and an effective charge of projectile and target. These velocity dependences are obtained from the Bohr adiabatic criterion using the Thomas-Fermi atomic model. We have get the electronic stopping cross-section expression using the Bethe approximation; we obtained the stopping cross-section of C and Al for C, O, and Si ions from this expression and compared our results with experiment and other theoretical calculations.

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2 Acta Physica Polonica A

1 2008

1 2005

2 Tufan M.

1 Gümüş H.

1 Gűműş H.

1 Köroğlu A.

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Stopping Power Calculations of Compounds by Using Thomas-Fermi-Dirac-Weizsäcker Density Functional

Stopping Power Calculations for Partially Stripped Projectiles in High Energy Region