Shakeoff of the Vacuum Bolarization in Quasimolecular Collisions of Very Heavy Ions*
نویسندگان
چکیده
The theory of direct electron-positron pair production in the collision of heavy ions i s formulated in the framework of the quasimolecular model. The pair production process acquires a collective nature for (Z1 +Z,)cu; 1 and can be understood a s the shakeoff of the strong vacuum polarization cloud formed in the quasimolecule. The total Cross section is, e .g., 76 l b for Pb + Pb at Coulomb bar r ie r energies.
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