| Full text | |
| Author(s): |
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 |