Screening Effects in Atomic Pair Production below 5 MeV
- 1 December 1972
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 6 (6) , 2049-2056
- https://doi.org/10.1103/physreva.6.2049
Abstract
Quantitative predictions for atomic-electron screening effects in low-energy pair production follow from the knowledge that the small-distance shape of screened-electron and positron continuum wave functions is close to that of point-Coulomb wave functions of shifted energy. These predictions are verified by making exact numerical calculations in representative cases. The energy-shift normalization theory is then used in conjunction with the point-Coulomb results of Øverbø to obtain predictions for atomic-pair-production energy distributions and total cross sections for photon energies from threshold to 5 MeV. Atomic-electron screening effects cause appreciable modifications of the total cross sections for photon energies below 1.5 MeV and continue to have a major effect on some portions of the energy distribution at higher photon energies. Results are also compared with Bethe-Heitler predictions and with experiments.Keywords
This publication has 31 references indexed in Scilit:
- Exact Calculation of Pair ProductionPhysical Review B, 1968
- Theoretical total cross-sections for high-energy nuclear-field pair production in light elementsIl Nuovo Cimento A (1971-1996), 1966
- The influence of electronic screening on high-energy bremsstrahlung and pair productionIl Nuovo Cimento (1869-1876), 1965
- Photon and Electron Polarization in High-Energy Bremsstrahlung and Pair Production with ScreeningPhysical Review B, 1959
- Theory of High-Energy Bremsstrahlung and Pair Production in a Screened FieldPhysical Review B, 1957
- Theory of Bremsstrahlung and Pair Production. I. Differential Cross SectionPhysical Review B, 1954
- The influence of screening on the creation and stopping of electronsMathematical Proceedings of the Cambridge Philosophical Society, 1934
- On the stopping of fast particles and on the creation of positive electronsProceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1934
- Sopra L’irradiazione Nell’urto di Particelle VelociIl Nuovo Cimento (1869-1876), 1934
- Über die Bremsstrahlung schneller ElektronenAnnalen der Physik, 1934