The multiple Coulomb scattering of very heavy charged particles

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Abstract
An experiment was performed at the Lawrence Berkeley Laboratory BEVALAC to measure the multiple Coulomb scattering of 650‐MeV/A uranium nuclei in 0.19 radiation lengths of a Cu target. Differential distributions in the projected multiple scattering angle were measured in the vertical and horizontal planes using silicon position‐sensitive detectors to determine particle trajectories before and after target scattering. The results were compared with the multiple Coulomb scattering theories of Fermi and Molière, and with a modification of the Fermi theory, using a Monte Carlo simulation. These theories were in excellent agreement with experiment at the 2σ level. The best quantitative agreement is obtained with the Gaussian distribution predicted by the modified Fermi theory.
Funding Information
  • U.S. Public Health Service (CA23247)
  • National Cancer Institute
  • National Aeronautics and Space Administration
  • U.S. Department of Energy (DE‐AC03−76SF00098)
  • University of California

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