MAIRA TIEME YOSHIZUMI
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Artigo IPEN-doc 14347 Use of a standard ionization chamber at different distances in diagnostic radiology beams2009 - YOSHIZUMI, M.T.; AFONSO, L.C.; CALDAS, L.V.E.A secondary standard ionization chamber was calibrated, by a primary standard laboratory, at a determined distance. However, in the routine procedures of a calibration laboratory, sometimes the radiation detector cannot be positioned exactly at the calibration distance, for any reason. In this work, the response of a secondary standard ionization chamber was tested to verify the possibility of its use at different distances than at the calibration distance, using the same calibration factor.