Spectrolog microprocessor stripper

Details Spectrolog microprocessor stripper Spectrolog microprocessor stripper

G - Physics

01

V

358/3

G01V 5/12 (2006.01) G01T 1/36 (2006.01) G01V 5/06 (2006.01)

Patent

CA 1138126

Abstract of the Disclosure Gamma spectrum measurement signals received from a downhole instrument containing a scintillation counter are coupled into a multi-channel analyzer. The analyzer converts the received pulses to pulses in separate channels according to energy levels of the received measurements. The energy channels from the multi-channel analyzer are coupled to digital decoders which are set up for energy level windows for pre- selected elements and the total occurrence count. The outputs are coupled into a microprocessor stripper which includes storage buffers sized in accordance with the logging rate and crystal utilized in the scintillation counter. These storage registers permit filtering in addition to stripping the various energy channels of the influence radiation caused by the elements having an energy band centered around a higher energy level. After the stripping occurs, the outputs for each of the selected energy channels may be coupled into a digital recorder or into count rate meters for conversion to analog voltages for driving a chart recorder.

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