MUON BREMSSTRAHLUNG ON HEAVY-ATOMS

The cross section for high energy muon bremsstrahlung on heavy atoms i s calculated without the use of the Born approximation. It is shown th at the correction to the Born approximation in the region of momentum transfers q of the order of mu c has the same order of magnitude as th e well-known correction of Davies, Bethe, and Maximon. It is shown als o that these corrections have different signs and nearly compensate ea ch other.