A TLD method for the determination of x-ray quality and output in the diagnostic range

A simple TLD method is described for the simultaneous determination of NVT and output of diagnostic X-ray machines. Thermoluminescent Li2B4O7: Mn phosphor sealed in polythene bags and attached to four 0.7 mm thick aluminium sheets as a step wedge was used as a compact packet and exposed to various energies of X-rays. The TL output was measured and plotted against thickness of Al and the HVT determined. Comparisons made with the usual aluminium wedge and X-ray dosimeter data showed agreement with +- 5% in the range of 40 to 130 kV. The HVT-TL- dosimeter wedge is convenient for handling and suitable especially for making measurements remotely by mail. (author)