The signal supplied to the amplifier from the preamplifier (Sect. 6.4.5) in a nuclear spectroscopy system is usually a “tail” pulse (Fig. 7–1) with a 50- to 100-μsec tail time constant and a rise time of 20 to 100 nsec (to rise from 10 to 90% of top value). The amplitude of this pulse will be directly proportional to the energy of the nuclear event taking place in the detector since the preamplifier has a fixed gain.
KeywordsCoupling Capacitor High Count Rate Noise Power Spectrum Common Mode Rejection Ratio Main Amplifier
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References and Notes
- 6a.See also: E. Fairstein and J. Hahn, Nuclear pulse amplifiers—Fundamentals and design practice, Nucleonics, 23 (July, September, and November 1965); 24 (January and March 1966).Google Scholar