Off‐axis beam quality change in linear accelerator x‐ray beams | Zendy

Hanson W. F. | Zendy; Berkley L. W. | Zendy; Peterson M. | Zendy

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Off‐axis beam quality change in linear accelerator x‐ray beams

Author(s) -

Hanson W. F.,

Berkley L. W.,

Peterson M.

Publication year - 1980

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 - 10.1118/1.594677

Subject(s) - linear particle accelerator , laser beam quality , beam (structure) , optics , particle accelerator , materials science , transmittance , physics , laser , laser beams

The effective energy of the x‐ray beam from linear accelerators changes as a function of the position in the beam due to nonuniform filtration by the flattening filter. In this work, the transmittance through a water column was measured in good geometry and the beam quality characterized in units of HVL in water. Measurements were made on a variety of linear accelerators from 4 to 10 MV. The beam energy decreased with increasing distance from the central ray for all accelerators measured.

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