Graphic Determination of the Differential Cross Sections of Bethe-Heitler and Pauli-Weisskopf in Extreme Relativistic Limits; GRAPHISCHE DARSTELLUNG DER DIFFERENTIELLEN WIRKUNGSQUERSCHNITTE VON BETHE-HEITLER UND PAULI-WEISSKOPF IN EXTREM RELATIVISTISCHEN GRENZFALL

Technical Report · Fri Jun 01 04:00:00 EDT 1962

OSTI ID:4759937

von Behr, J

The differential cross sections for pair productions of fermions with spin 1/2 was first given by Bethe-Heitler, and the corresponding expression for bosons with spin 0 was given by Pauli-Weisskopf. At high primary gamma energy, there are significant deviations from these first approximations. In the present report, extremely relativistic approximations of the Bethe-Heitler and Pauli- Weisskopf formulas were derived and represented graphically. These approximations are not valid for angles theta << 1. The dependence on the primary energy is represented in a simple manner. The ex tremely relativistic limiting cases for fermions and bosons are derived. The effect of shielding on the scattering cross section is determined. (J.S.R.)

• Research Organization: Deutsches Elektronen-Synchrotron, Hamburg
• NSA Number: NSA-16-032271
• OSTI ID: 4759937
• Report Number(s): DESY-A2.87
• Country of Publication: Germany
• Language: English

Related Subjects

BETHE-HEITLER THEORY
BREMSSTRAHLUNG
CHARGED PARTICLES
ENERGY
LOSSES
PHYSICS