Study of electron bremsstrahlung in strong Coulomb fields at the ESR storage ring

Electron bremsstrahlung has been investigated for collisions of 223.2 MeV/amu He-like uranium ions with N2 and Ar gaseous targets. The doubly differential cross-sections for bremsstrahlung are compared to the predictions of relativistic first order Born calculations (Bethe-Heitler formula with Elwer...

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Published in:Hyperfine interactions 1998-01, Vol.114 (1-4), p.165-169
Main Authors: Ludziejewski, T, Stöhlker, T, Keller, S, Beyer, H, Bosch, F, Brinzanescu, O, Kozhuharov, C, Krämer, A, Liesen, D, Mokler PH, Pratt, R H, Rymuza, P, Shaffer, C D, Stachura, Z, Świat, P, Warczak, A
Format: Article
Language:English
Subjects:
Bethe-Heitler formula
Bremsstrahlung
Coulomb potential
Mathematical analysis
Projectiles
Storage rings (particle accelerators)
Uranium
Wave functions
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container_end_page 169
container_issue 1-4
container_start_page 165
container_title Hyperfine interactions
container_volume 114
creator Ludziejewski, T
Stöhlker, T
Keller, S
Beyer, H
Bosch, F
Brinzanescu, O
Kozhuharov, C
Krämer, A
Liesen, D
Mokler PH
Pratt, R H
Rymuza, P
Shaffer, C D
Stachura, Z
Świat, P
Warczak, A
description Electron bremsstrahlung has been investigated for collisions of 223.2 MeV/amu He-like uranium ions with N2 and Ar gaseous targets. The doubly differential cross-sections for bremsstrahlung are compared to the predictions of relativistic first order Born calculations (Bethe-Heitler formula with Elwert correction factor) and to the calculations based on the exact wavefunctions for electrons moving in the external point-Coulomb potential of the projectile. Whereas the “exact” IPA calculations give an improved agreement with experimental data, as compared to the Bethe-Heitler theory, in particular at the end-point region of the bremsstrahlung spectra, discrepancies still remain at lower photon energies.
doi_str_mv 10.1023/A:1012626606276
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subjects Bethe-Heitler formula
Bremsstrahlung
Coulomb potential
Mathematical analysis
Projectiles
Storage rings (particle accelerators)
Uranium
Wave functions
title Study of electron bremsstrahlung in strong Coulomb fields at the ESR storage ring
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