Temperature drift during environmental radiation monitoring and its unfolding.

The aim of the presented paper is to examine the temperature drift and its unfolding for an environmental monitor equipped with a LaBr(Ce) detector. It is known that temperature could influence energy, shape, and efficiency calibration. Consequently, when ambient temperature changes, the full energy absorption peak moves in the resulting spectrum.

Dependence of photon registration efficiency on LaBr(Ce) detector orientation for in situ radionuclide monitoring.

Knowledge of a radiation detector's numerical characteristics allows its energy efficiency to be calibrated theoretically for any measurement geometry. Here, energy efficiency calibration is discussed for oriented LaBr(Ce) detectors used for in situ radiation monitoring. Vertical and horizontal detector orientations relative to the ground surface are compared using efficiency calibrations based on the detector's numerical characteristics and are equally effective.

Calibration factor fluctuation for radiological protection instruments used in Nuclear Medicine Departments - experience from CLOR.

Background: The calibration of the dosimetric instruments is a basis of safety of the people working with the ionization radiation. The necessity of calibration is especially important in the institutions where the open radioactive sources are used. The paper presents the abilities of CLOR's radiological protection instruments calibration facility and the important conclusions from calibrations results for group of instruments used in Nuclear Medicine Department in Poland.