Shakeoff of the Vacuum Polarization in Quasimolecular Collisions of Very Heavy Ions
- 14 March 1977
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 38 (11), 592-595
- https://doi.org/10.1103/PhysRevLett.38.592
Abstract
The theory of direct electron-positron pair production in the collision of heavy ions is formulated in the framework of the quasimolecular model. The pair production process acquires a collective nature for and can be understood as the shakeoff of the strong vacuum polarization cloud formed in the quasimolecule. The total cross section is, e.g., 76 μb for Pb + Pb at Coulomb barrier energies.
Keywords
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