Spectrometer with charge-carrier-trapping correction

Details Spectrometer with charge-carrier-trapping correction Spectrometer with charge-carrier-trapping correction

2007-12-25

2007-12-25

Hannaher, Constantine (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

Semiconductor system

Reexamination Certificate

active

11119618

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.

REFERENCES:
patent: 4937452 (1990-06-01), Simpson et al.
patent: 5821538 (1998-10-01), De Antoni et al.
patent: 5872363 (1999-02-01), Bingham et al.

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