Berlin 2001 – wissenschaftliches Programm
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A: Atomphysik
A 19: Electrons, incl. Scattering and Recombination
A 19.12: Vortrag
Freitag, 6. April 2001, 18:30–18:45, H1028
Electron Scattering by Xe at Intermediate and High Energies: 0.5 - 10 keV — •Gustavo Garcia1, Jose Luis de Pablos1, Francisco Blanco2, and Amalia Williart3 — 1CIEMAT,Avenida Complutense 22,Edificio 2,28040 Madrid,Spain — 2Universidad Complutense de Madrid,Avenida Complutense sn,28040 Madrid,Spain — 3UNED,Senda del Rey 9,28040 Madrid,Spain
Important applications based on energy deposition models of radiation in matter require cross section data for electron scattering by atoms and molecules over a wide energy range. However reliable data for both elastic and inelastic processes at electron energies ranging from 0.5 to 10 keV are scarce, and especially for heavy atoms as Xe. Moreover, recent total cross section measurements for atomic and molecular targets show significant discrepancies for energies above 1 keV. In this study, the total cross sections for electron scattering by Xe have been measured for energies ranging from 0.5 to 5 keV by using a transmission-beam technique. A detailed analysis of possible systematic errors is also given. Differential and integral elastic cross section have been calculated in the energy range 0.5-10 keV by using a scattering potential method. Finally, integral inelastic cross section have been obtained by combining the total cross sections with the corresponding integral elastic ones.