Pulsed Feedback Tecniques for Semicondctor Detector Radiation Spectrometers
- 1 January 1971
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Nuclear Science
- Vol. 18 (1) , 115-124
- https://doi.org/10.1109/tns.1971.4325851
Abstract
Methods of applying pulsed-charge feedback to the charge-sensitive preamplifiers used with semiconductor detectors are discussed. All have in commn the accumulation of radiation-induced charge pulses on a feedback capacitor to produce a voltage ramp at the output of the feedback stage, which is reset at an appropriate point by pulsing a charge feedback path. Advantages of pulsed feedback over the conventional dc feedback techniques are discussed, together with the precautions required to reduce the effect of the large reset pulse on the later electronics. The application of pulsed-light feedback to low energy X-ray spectrometers is discussed and results are presented. We also discuss sane aspects of this system that tend to limit its high-rate performance. A brief account of the use of a transistor current-switch feedback system to reduce overload problems in high-energy ¿-ray spectrometers is also given.Keywords
This publication has 7 references indexed in Scilit:
- Detection of Low Energy X Rays with Si(Li) DetectorsIEEE Transactions on Nuclear Science, 1971
- Charge Amplification without Charge Leak ResistorIEEE Transactions on Nuclear Science, 1970
- Recent Results on the Optoelectronic Feedback PreamplifierIEEE Transactions on Nuclear Science, 1970
- Methods of Reducing Noise of Junction Field Effect Transistor (JFET) AmplifiersIEEE Transactions on Nuclear Science, 1970
- Overload Recovery Circuit for Charge AmplifiersIEEE Transactions on Nuclear Science, 1970
- An opto-electronic feedback preamplifier for high-resolution nuclear spectroscopyNuclear Instruments and Methods, 1969
- Elimination of Undesirable Undershoot in the Operation and Testing of Nuclear Pulse AmplifiersReview of Scientific Instruments, 1965