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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.)

Higher-order theories for relativistic electron-atom bremsstrahlung in comparison with experiment

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Mangiarotti, A. [1] ; Jakubassa-Amundsen, D. H. [2]
Total Authors: 2
[1] Univ Sao Paulo, Inst Fis, Rua Matao 1371, BR-05508090 Sao Paulo - Brazil
[2] Univ Munich, Math Inst, Theresienstr 39, D-80333 Munich - Germany
Total Affiliations: 2
Document type: Journal article
Source: Physical Review A; v. 96, n. 4 OCT 9 2017.
Web of Science Citations: 5

The analytic Sommerfeld-Maue theory, including the next-to-leading-order correction, and the relativistic Dirac partial-wave theory are probed by a systematic comparison of the bremsstrahlung spectra with available experimental data. These measurements cover a wide range of nuclear charge numbers (13 <= Z <= 79), collision energies (1-10 MeV), and photon angles (4 degrees <= theta(k) <= 60 degrees). It is found that the analytic model performs well for Z <= 13 at all angles down to very low photon frequencies. For high charge numbers, at high photon energies (i.e., in the short-wavelength limit) or for the larger angles at all photon energies, the partial-wave theory has to be used. For intermediate Z <= 50, the maximum angle up to which the analytic formulae can be used decreases with increasing Z. (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