Improving the accuracy of single radioactive particle technique for flow velocity measurements

An original method of flow velocity estimation for a radioactive particle technique is presented. It is based on exchanging measured pulses into cumulative signals, and determination of time delay as time difference of occurrences of inflection points of cumulative curves. To determine the inflection points, a suitable algorithm is proposed. The preliminary results show that the proposed method is especially more precise than the classical cross-correlation approach. The preliminary results show that this method can be successfully applied in a laminar flow with any type of fluid, and can without limitation be applied for different types of radioactive detectors.