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The multiple Coulomb scattering of very heavy charged particles
Author(s) -
Wong Mervyn,
Schimmerling Walter,
Phillips Mark H.,
Ludewigt Bernhard A.,
Landis Donald A.,
Walton John T.,
Curtis Stanley B.
Publication year - 1990
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.596538
Subject(s) - physics , scattering , monte carlo method , fermi gamma ray space telescope , coulomb , charged particle , scattering theory , nuclear physics , mott scattering , atomic physics , computational physics , optics , small angle neutron scattering , electron , condensed matter physics , neutron scattering , quantum mechanics , ion , statistics , mathematics
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.