Portable gamma intensity time recorder

Claim 1

AN APPARATUS FOR DETECTING AND RECORDING RADIATION INTENSITY AS A FUNCTION OF TIME WHICH COMPRISES A FIRST RADIATION DETECTOR OF THE INTEGRATING TYPE WHICH PRODUCES A D.C. VOLTAGE OUTPUT SIGNAL WHICH PROGRESSIVELY CHANGES IN POTENTIAL IN RESPONSE TO THE AGGREGATIVE AMOUNT OF RADIATION DETECTED BY SAID DETECTOR OVER A GIVEN TIME INTERVAL; A FIRST RECYCLING ELECTROMETER, WHOSE INPUT IS CONNECTED TO THE OUTPUT OF SAID FIRST DETECTOR, FOR PRODUCING AN OUTPUT PULSE WHENEVER THE OUTPUT VOLTAGE OF SAID FIRST DETECTOR REACHES A CERTAIN PREDETERMINED LEVEL; A SECOND RADIATION DETECTOR OF THE INTEGRATING TYPE WHICH PRODUCES A D.C. VOLTAGE OUTPUT SIGNAL WHICH PROGRESSIVELY CHANGES IN POTENTIAL IN RESPONSE TO THE AGGREGATIVE AMOUNT OF RADIATION DETECTED BY SAID DETECTOR OVER A GIVEN TIME INTERVAL; A SECOND RECYCLING ELECTROMETER WHOSE INPUT IS CONNECTED TO THE OUTPUT OF SAID SECOND DETECTOR, FOR PRODUCING AN OUTPUT PULSE WHENEVER THE OUTPUT VOLTAGE OF SAID FIRST DETECTOR REACHES A CERTAIN PREDETERMINED LEVEL; RECORDING MEANS FOR RECEIVING AND RECORDING CONCURRENTLY IN CORRELATIVE FASHION A PLURALITY OF SIGNAL PULSE TRAINS FROM DIFFERENT SOURCES, SAID RECORDING MEANS BEING CONNECTED TO THE RESPECTIVE OUTPUTS OF SAID FIRST AND SAID SECOND RECYCLING ELECTROMETERS; TIMING SIGNAL GENERATING MEANS FOR GENERATING A TRAIN OF TIMING PULSES, THE OUTPUT OF SAID TIMING SIGNAL GENERATING MEANS BEING CONNECTED TO SAID RECORDING MEANS; AND CONTROL MEANS, CONNECTED RESPECTIVELY TO SAID TIMING SIGNAL GENERATING MEANS, TO SAID RECORDING MEANS AND TO SAID FIRST AND SAID SECOND RECYCLING ELECTROMETERS FOR CONTROLLABLY ENERGIZING THESE RESPECTIVE ELEMENTS; SAID FIRST AND SAID SECOND RADIATION DETECTORS BEING RESPECTIVELY SENSITIVE TO DIFFERENT RANGES OF INTENSITY OF THE RADIATION BEING DETECTED, THE RESPECTIVE PULSE TRAINS FROM SAID FIRST AND SAID SECOND RECYCLING ELECTROMETERS BEING INDIVIDUALLY RECORDED BY SAID RECORDING MEANS WITH REFERENCE TO A TIME BASE DEFINED BY SAID TIMING PULSES, WHEREBY SAID APPARATUS FOR DETECTING AND RECORDING RADIATION INTENSITY REFLECTS THE RADIATION INTENSITY LINEARLY WITH RESPECT TO TIME WITHOUT COMPRESSED CONVERSION OF SUCH RADIATION INTENSITY DATA.

Claim 2

AN APPARATUS FOR DETECTING AND RECORDING RADIATION INTENSITY AS A FUNCTION OF TIME WHICH COMPRISES A FIRST RADIATION DETECTOR OF THE INTEGRATING TYPE WHICH PRODUCES A D.C. VOLTAGE OUTPUT SIGNAL WHICH PROGRESSIVELY CHANGES IN POTENTIAL IN RESPONSE TO THE AGGREGATIVE AMOUNT OF RADIATION DETECTED BY SAID DETECTOR OVER A GIVEN TIME INTERVAL; A FIRST RECYCLING ELECTROMETER, WHOSE INPUT IS CONNECTED TO THE OUTPUT OF SAID FIRST DETECTOR, FOR PRODUCING AN OUTPUT PULSE WHENEVER THE OUTPUT VOLTAGE OF SAID FIRST DETECTOR REACHES A CERTAIN PREDETERMINED LEVEL; A SECOND RADIATION DETECTOR OF THE INTEGRATING TYPE WHICH PRODUCES A D.C. VOLTAGE OUTPUT SIGNAL WHICH PROGRESSIVELY CHANGES IN POTENTIAL IN RESPONSE TO THE AGGREGATIVE AMOUNT OF RADIATION DETECTED BY SAID DETECTOR OVER A GIVEN TIME INTERVAL; A SECOND RECYCLING ELECTROMETER WHOSE INPUT IS CONNECTED TO THE OUTPUT OF SAID SECOND DETECTOR, FOR PRODUCING AN OUTPUT PULSE WHENEVER THE OUTPUT VOLTAGE OF SAID FIRST DETECTOR REACHES A CERTAIN PREDETERMINED LEVEL; RECORDING MEANS FOR RECEIVING AND RECORDING CONCURRENTLY IN CORRELATIVE FASHION A PLURALITY OF SIGNAL PULSE TRAINS FROM DIFFERENT SOURCES, SAID RECORDING MEANS BEING CONNECTED TO THE RESPECTIVE OUTPUTS OF SAID FIRST AND SAID SECOND RECYCLING ELECTROMETERS; TIMING SIGNAL GENERATING MEANS FOR GENERATING A TRAIN OF TIMING PULSES, THE OUTPUT OF SAID TIMING SIGNAL GENERATING MEANS BEING CONNECTED TO SAID RECORDING MEANS; AND CONTROL MEANS, CONNECTED RESPECTIVELY TO SAID TIMING SIGNAL GENERATING MEANS, TO SAID RECORDING MEANS AND TO SAID FIRST AND SAID SECOND RECYCLING ELECTROMETERS FOR CONTROLLABLY ENERGIZING THESE RESPECTIVE ELEMENTS; SAID FIRST AND SAID SECOND RADIATION DETECTORS BEING RESPECTIVELY SENSITIVE TO DIFFERENT RANGES OF INTENSITY OF THE RADIATION BEING DETECTED, THE RESPECTIVE PULSE TRAINS FROM SAID FIRST AND SAID SECOND RECYCLING ELECTROMETERS BEING INDIVIDUALLY RECORDED BY SAID RECORDING MEANS WITH REFERENCE TO A TIME BASE DEFINED BY SAID TIMING PULSES, WHEREBY SAID APPARATUS FOR DETECTING AND RECORDING RADIATION INTENSITY REFLECTS THE RADIATION INTENSITY LINEARLY WITH RESPECT TO TIME WITHOUT COMPRESSED CONVERSION OF SUCH RADIATION INTENSITY DATA.