Wall effects in plane-parallel ionization chambers.

  title={Wall effects in plane-parallel ionization chambers.},
  author={Bo R. Nilsson and Anders Montelius and Pedro Andreo},
  journal={Physics in medicine and biology},
  volume={41 4},
All dosimetry protocols recommend the use of plane-parallel chambers for dose determination in electron beams with energies below 10-15 MeV. The protocols have assumed chamber perturbation effects to be negligible. The new AAPM Protocol (TG39) includes a cavity replacement factor prepl that differs from unity for some chambers, but assumes that the wall perturbation factor, pwall, may be taken as unity. In this paper the perturbation of the wall has been determined, using a large plane-parallel… CONTINUE READING


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