High Resolution Ge (Li) Spectrometer for High Input Rates
作者:
M. G. Strauss,
I. S. Sherman,
R. Brenner,
S. J. Rudnick,
R. N. Larsen,
H. M. Mann,
期刊:
Review of Scientific Instruments
(AIP Available online 1967)
卷期:
Volume 38,
issue 6
页码: 725-730
ISSN:0034-6748
年代: 1967
DOI:10.1063/1.1720876
出版商: AIP
数据来源: AIP
摘要:
A system was developed for obtaining &ggr;‐ray spectra with high resolution at high input rates. For rates up to 100 000 &ggr;‐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 &mgr;sec. 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.
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