Energy-Loss of Positrons in Foils

• Authors: H. Schneider , I. Tobehn , M. Rückert , U. Brinkmann , R. Hippler
• Languages of publication: EN

Abstracts

EN

The Giessen slow positron source TEPOS delivers intense beams in the energy range between some eV and 6 keV; with postacceleration up to 80 keV. Results for remoderation are described shortly. Further the energy-losses of positrons with incident energy of 6-20 keV through thin aluminium foils were measured. Cross sections for K- and L-shell ionization of thin silver and gold targets by positron and electron impact have been determined at projectile energies of 30-70 keV. The experimental results are presented in detail; they are confirmed by calculations in plane-wave-Born approximation which include an electron exchange term and account for the deceleration or acceleration of the incident projectile in the nuclear field of the target atom.

Keywords

EN

07.77.+p; 29.25.-t; 34.80.Dp

Discipline

• 29.25.-t: Particle sources and targets(see also 52.59.-f Intense particle beams and radiation sources in physics of plasmas; 87.56.bg Radioactive sources in medical physics)
• 34.80.Dp: Atomic excitation and ionization

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1993
• Volume: 83
• Issue: 3
• Pages: 375-380

Dates

published

1993-03

Contributors

author

H. Schneider

• Strahlenzentrum der Universität Giessen, Leihgesterner Weg 217, 6300 Giessen, Germany

author

I. Tobehn

• Strahlenzentrum der Universität Giessen, Leihgesterner Weg 217, 6300 Giessen, Germany

author

M. Rückert

• Strahlenzentrum der Universität Giessen, Leihgesterner Weg 217, 6300 Giessen, Germany

author

U. Brinkmann

• Fakultät für Physik, Universität Bielefeld, Universitätsstrasse 25, 4800 Bielefeld 1, Germany

author

R. Hippler

• Fakultät für Physik, Universität Bielefeld, Universitätsstrasse 25, 4800 Bielefeld 1, Germany

Identifiers

DOI

10.12693/APhysPolA.83.375