Nonlinear response of low-background extrinsic silicon detectors. 2: A revised model

Area of Science:

• Physics
• Electrical Engineering
• Materials Science

Background:

• Low-background silicon photoconductive detectors are essential for sensitive measurements.
• Understanding their nonlinear response to flux variations is critical for accurate data acquisition.
• Existing models may not fully capture the complex behavior of these detectors.

Purpose of the Study:

• To present a revised model for calculating the nonlinear response of Si:X photoconductive detectors.
• To validate the model against experimental measurements of detector behavior.
• To propose a straightforward method for calibrating detector nonlinearity.

Main Methods:

• Development of a revised computational model for detector response.
• Experimental modulation of detector flux using sine and square wave patterns.
• Comparison of model predictions with measured detector responses.

Main Results:

• The revised model accurately computes the nonlinear response of low-background Si:X photoconductive detectors.
• Model results show good agreement with experimental data for large-amplitude flux modulations.
• The study implies a simple procedure for calibrating detector nonlinear response.

Conclusions:

• The developed model provides a reliable tool for understanding and predicting detector behavior.
• The findings facilitate improved calibration techniques for sensitive detectors.
• This work enhances the accuracy and reliability of measurements using Si:X photoconductive detectors.