The use of Monte Carlo calculations in the determination of a Ge detector efficiency curve Academic Article uri icon


  • Precise measured data and an extensive set of Monte Carlo calculations have been combined to optimize the parameters for a 280cm3 n-type Ge semiconductor photon detector, with the outcome that the Monte Carlo calculations now provide a very precise detector efficiency curve. The detector position and its length were determined from a set of measurements that included an axial scan. Measurements of the relative efficiencies based on radionuclides with accurately known relative photon emission rates were combined with efficiencies calculated by a Monte Carlo photon and electron transport code to adjust the detector diameter, internal deadlayer thickness, and the effective external deadlayer thickness. Our results show that, in a well-studied situation, it is possible to use Monte Carlo calculations to aid in the determination of a Ge detector's efficiency with an accuracy of about 0.2% from 50 to 1400keV. © 2003 Elsevier B.V. All rights reserved.

author list (cited authors)

  • Helmer, R. G., Hardy, J. C., Iacob, V. E., Sanchez-Vega, M., Neilson, R. G., & Nelson, J.

citation count

  • 118

publication date

  • October 2003