Electromagnetic pair production with capture
Abstract
Calculations of the electron-positron pair production by a single photon in the Coulomb field of a nucleus with simultaneous capture of the electron into the K shell are presented. Numerical results are given for some nuclear charges up to 92 and energies from threshold to 15 MeV. Using the equivalent-photon method of Weizsäcker and Williams, reliable estimates of the cross sections for the production of e+e- (K orbit) pairs by very-high-energy fully stripped heavy ions can be made for arbitrary nuclear charges.
- Publication:
-
Physical Review A
- Pub Date:
- November 1994
- DOI:
- 10.1103/PhysRevA.50.3980
- Bibcode:
- 1994PhRvA..50.3980A
- Keywords:
-
- 34.90.+q;
- 32.90.+a;
- 12.20.-m;
- Other topics in atomic and molecular collision processes and interactions;
- Other topics in atomic properties and interactions of atoms with photons;
- Quantum electrodynamics