An electronic pulse multiplier for applications in nuclear physics

A relatively simple method is proposed for multiplying together the two voltage pulses corresponding to E and dE/dx for a charged particle and for gating a pulse height analyzer to record only those E pulses whose E dE/dx product is equal to some preselected value. To form the product, the amplitude-to-time conversion in the multi-channel analyzer handling the E pulse is further exploited. The time analogue of the E pulse is obtained from the analyzer and is fed to a separate circuit to be combined with the dE/dx pulse to form a pulse whose height is proportional to the product of E and dE/dx. The product pulse is then sorted by a single channel analyzer, in time to allow an inhibiting pulse to be fed back into the multi-channel analyzer if the product pulse is not of the desired value. The inhibiting pulse prevents the E pulse from being recorded in the memory of the analyzer; in the absence of an inhibiting pulse, the E pulse height is recorded in the memory.Peer reviewed: YesNRC publication: Ye