Abstract
The technique for field calibrations of albedo dosemeters makes use of at least three TL detectors, one in the centre of a 30 cm polyethylene sphere and two within an albedo dosemeter located at the surface of the sphere. Linear superpositions of the three detector readings allow the estimation of the neutron fluence, absorbed dose, dose equivalent, and quality factor in stray neutron fields with an energy and angular response of about 25%. The advantages of the technique are discussed and examples of calculated and measured field data for different neutron spectra are given. The single sphere technique is recommended for the calibration of albedo dosemeters in neutron stray radiation fields.
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