Angular distribution of high-energy $e^+e^-$ photoproduction close to the end of spectrum

Details Angular distribution of high-energy $e^+e^-$ photoproduction close to the end of spectrum Angular distribution of high-energy $e^+e^-$ photoproduction close to the end of spectrum

2012-03-09

arxiv.org/abs/1203.2137v1

Phys. Rev. A vol. 85, 042107 (2012)

Physics

Atomic Physics

12 pages, 4 figures

Scientific paper

We consider the differential cross section of electron-positron pair production by a high-energy photon in a strong Coulomb field close to the end of the electron or positron spectrum. When the momentum transfer largely exceeds the electron mass, the cross section is obtained analytically in a compact form. Coulomb corrections essentially modify the cross section even for moderate values of the nuclear charge number $Z$. In the same kinematical region, the angular distribution for bound-free pair production, bremsstrahlung, and photorecombination is also obtained.

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