Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Patent
1995-04-07
1997-03-04
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
25037006, G01T 136
Patent
active
056082223
ABSTRACT:
An analog to digital conversion technique for spectroscopy enables the use of detectors in which resolution varies as a function of energy, and analog to digital converters with relatively poor differential linearity without sacrificing the ability to determine the locations and magnitude of peaks within a spectrum. A transfer function that characterizes the dependence of the resolution of the system is used to convert data before the data is displayed in a histogram. The transfer function can also characterize repeatable non-linearities in the system. The invention is particularly useful for gamma ray spectroscopy with sodium iodide detectors. The transform function can be implemented in a digital circuit, an analog circuit, or in a firmware or software transform table.
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