High Resolution Ge (Li) Spectrometer for High Input Rates
- 1 June 1967
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 38 (6) , 725-730
- https://doi.org/10.1063/1.1720876
Abstract
A system was developed for obtaining γ‐ray spectra with high resolution at high input rates. For rates up to 100 000 γ‐ray events/sec in a 3.5 cm3 (13 mm thick) Ge(Li) detector, the FWHM at 1.33 MeV is 2–3½ keV and the spectral shift is no more than 0.1%. The amplifying chain, consisting of a cooled FET preamplifier and a simple main amplifier, is pole‐zero compensated throughout. The amplifier produces unipolar pulses shaped with equal integrating and differentiating time constants of 1.2 μsec. The amplifier is followed by a two‐diode baseline restorer, a pileup rejector, a linear gate, and an analog to digital converter. The salient features of the system are described and performance data are presented and discussed.Keywords
This publication has 6 references indexed in Scilit:
- Active D-C Restoration in Nuclear Pulse SpectrometryIEEE Transactions on Nuclear Science, 1967
- A High Precision DC RestorerIEEE Transactions on Nuclear Science, 1967
- Elimination of Undesirable Undershoot in the Operation and Testing of Nuclear Pulse AmplifiersReview of Scientific Instruments, 1965
- Solid-State Pulse-Height Encoding System with Pileup Reduction for Counting at High Input RatesReview of Scientific Instruments, 1963
- Three-Parameter Multichannel Recorder-Analyzer SystemReview of Scientific Instruments, 1961
- Reduction of Baseline Shift in Pulse-Amplitude MeasurementsReview of Scientific Instruments, 1961