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METHOD FOR MEASURING COUNTING RATES OR MEASURED VALUES DEPENDENT ON THE COUNTING RATES, AND DEVICE FOR MEASURING COUNTING RATES OR MEASUREMENT VARIABLES DEPENDENT ON THE COUNTING RATES
METHOD FOR MEASURING COUNTING RATES OR MEASURED VALUES DEPENDENT ON THE COUNTING RATES, AND DEVICE FOR MEASURING COUNTING RATES OR MEASUREMENT VARIABLES DEPENDENT ON THE COUNTING RATES
The invention relates to a method for measuring counting rates (ZR1, ZR2, ZR3, ZR4) or measured variables dependent on the counting rates for determining a density profile (DP) of at least two substances (ST) with different densities (DE) arranged within a container ( 20) by means of a plurality of detectors (41, 42, 43, 44), the method comprising the steps: a) each detection of respective gamma rays (GR), which in each case have at least partially penetrated at least one of the substances (ST) by means of of the detectors (41, 42, 43, 44), and b) each generation of a respective count rate (ZR1, ZR2, ZR3, ZR4) or a respective measured variable dependent on the count rate based only on the respectively detected gamma rays (GR) whose respective gamma rays Energy (GE) are equal to or greater than an energy threshold value (ETh2), the energy threshold value (ETh2) being at least 0.5 times a Compton energy value (CE) of a Compton gap (CG) of the gamma rays (GR).
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