Influence of a medium on pair photoproduction and bremsstrahlung

Abstract

The creation of electron-positron pair by a photon and the bremsstrahlung of an electron in a medium are considered in high-energy region, where influence of the multiple scattering on the processes (the Landau-Pomeranchuk-Migdal (LPM) effect) becomes essential. The pair photoproduction probability is calculated with an accuracy up to the "next to leading logarithm". The integral characteristics: the radiation length and the total probability of pair photoproduction are analyzed under influence of the LPM effect, and the asymptotic expansions of these characteristics are derived.

22 pages, 3 figures, Latex

Cited by in corpus (15)

• Landau-Pomeranchuk-Migdal effect in thermal field theory
• Concept of Formation Length in Radiation Theory
• Electron and Photon Interactions in the Regime of Strong LPM Suppression
• $e^{+}{e}^{-}$ Pair Production from 10 GeV to 10 ZeV
• Coherent and incoherent radiation from high-energy electron and the LPM effect in oriented single crystal
• Coherent and incoherent pair creation by a photon in oriented single crystal
• Anomalous magnetic moment of the electron in a medium
• Coherent scattering of high-energy photon in a medium
• Variation of radiation length due to LPM effect
• Radiation from polarized electrons in oriented crystals at high energy
• On propagation of high-energy photon in a medium in presence of an external field
• EmCa -- Electromagnetic-Cascades Simulation Package
• Spectrum and polarization of coherent and incoherent radiation and the LPM effect in oriented single crystal
• Polarization effects for pair creation by photon in oriented crystals at high energy
• Comparison with experimental data of different theoretical approaches to high-energy electron bremsstrahlung including quantum coherence effects