Efficiency calibration of a Si(Li) X-ray detector in the 1.5-60 keV energy region

The efficiency of a Si(Li) X-ray detector has been determined in the 1.5-60 keV energy region using five different methods. The data given by the different methods have been compared and a fitting procedure has been worked out, by means of which the low energy (1.5-5 keV) efficiency data can be well described analytically. From the fitting the values of some of the detector-parameters can be determined or the accuracy of their values can be checked. (orig.)