Spectrometer with charge-carrier-trapping correction
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United States of America Patent
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Dec 25, 2007
Grant Date -
Nov 2, 2006
app pub date -
May 2, 2005
filing date -
May 2, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A spectrometer having improved energy resolution by correcting for error introduced by charge carrier trapping. By monitoring the shape of the pulses produced by the detector, a digital filter is adjusted to improve the energy resolution. The adjustment is performed manually by an operator or automatically by an automatic optimizer circuit that modifies the digital filter until the spectral peaks have a width and shape matching the desired characteristics, which are a minimum width and a substantially symmetrical shape. By correcting for the energy loss associated with long rise time events, the charge-trapping correcting spectrometer produces spectral peaks with improved energy resolution.
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