Radiation analysis apparatus

Details Radiation analysis apparatus Radiation analysis apparatus

1994-03-22

1996-08-13

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Methods

G01T 117

Patent

active

055459005

ABSTRACT:
A radiation analysis apparatus is provided with circuitry for correcting errors in a pulse-height distribution due to differential non-linearities of the analog-to-digital converter that is employed for digitising the detector signals. Correction is performed by multiplying counts by correction factors so as to form corrected counts constituting a corrected pulse-height spectrum. Correction factors are obtained by supplying to the analog-to-digital converter a known control-measurement detector signal having a known corresponding ideal pulse-height spectrum. Comparison of the pulse-height spectrum actually formed upon supplying the control-measurement detector signal with the ideal pulse-height spectrum provides correction factors that are stored in a memory. Generator signals obtained during radiation analysis lead to counts to be corrected which are supplied to a multiplier together with respective correction factors such that corrected counts are formed constituting a corrected pulse-height distribution being supplied to a display device.

REFERENCES:
patent: 4352160 (1982-09-01), Frech et al.
patent: 4903023 (1990-02-01), Evans et al.
patent: 5304808 (1994-04-01), Odell

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