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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Accuracy of analytical theories for relativistic bremsstrahlung

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Author(s):
Jakubassa-Amundsen, D. H. [1] ; Mangiarotti, A. [2]
Total Authors: 2
Affiliation:
[1] Univ Munich, Math Inst, Theresienstr 39, D-80333 Munich - Germany
[2] Univ Sao Paulo, Inst Fis, Rua Matao 1371, BR-05508090 Sao Paulo - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Physical Review A; v. 100, n. 3 SEP 9 2019.
Web of Science Citations: 1
Abstract

Angular and energy-dependent photon distributions emitted from 50-keV to 2.5-MeV electrons colliding with targets ranging from Cu to Pb are calculated using a consistent higher order analytical approach as well as the exact Dirac partial-wave theory. By comparison with exact numerical results for neutral atoms, the validity of the Olsen-Maximon-Wergeland additivity rule for handling the screening correction is probed, and its applicability for collision energies above 100 keV, if the photon frequency and emission angle are both small, is established. The comparison for a point-Coulomb field, aimed at testing the accuracy of the underlying analytical theory, reveals in most cases a deviation below 60% for Au, decreasing with target nuclear charge down to 10-20% for Cu. (AU)

FAPESP's process: 13/15634-5 - Study of bremsstrahlung properties at the few MeV energy range
Grantee:Marcos Nogueira Martins
Support type: Research Grants - Visiting Researcher Grant - International
FAPESP's process: 16/13116-5 - Systematic measurements of electron and proton multiple scattering with energies up to 5 MEV
Grantee:Alessio Mangiarotti
Support type: Research Grants - Young Investigators Grants