SU518070A1 - Apparatus for registering cascade gamma transitions - Google Patents

Description

(54) DEVICE FOR REGISTRATION OF CASCADE GAMMA TRANSITIONS

T T f (T coincidence levels are quantized at the beginning at the end of each peak of the single f, B, or oC spectra, which have a distinctly discrete distribution pattern.

In areas of uniform (for example, Compton) distribution, in which there are no peaks, quantization limits are not selected.

The drawing shows a block diagram of the Proposed device.

The device consists of nuclear radiation detectors 1 and 2, matching circuit C 3, controlled transducers 4 and 5 amplitude-pulse series, control unit 6, arithmetic unit 7 address registers 8 and 9, respectively, group selection and memory channel 10, counters 11 and 12, logically) circuits AND 13 and 14, logic circuits OR 15 and 16, toggle switches 17 and 18, the choice of quantization levels, delay circuits 19 and 2O,

The inputs of counters 11 and 12 are connected to the outputs of controlled transducers amplitude-series of pulses — respectively, the code outputs and O of both counters are connected to the contacts of toggle switches 17a 1711 and 18a - letf, which serve to select the corresponding bits in the codes of numbers that determine the amplitude of the input signals , and with which help ci set the appropriate quantization levels. The toggle contacts of the toggle switches are connected to the inputs of logic circuits AND 13a - tg, 14a -Tm, the outputs of which are connected to the inputs of logic circuits OR 15 and 16, the outputs of which are connected to the inputs of the address registers 8 and 9, respectively, of the group selection and selection channel.

The device is as follows. After the start of the conversion, a series of pulses is taken from the outputs of the controlled pulse amplitude transducers, which are counted by counters 11 and 12. When the number of counted pulses corresponds to the selected codes determined by the set position of the toggle switches 17 and 18, respectively, and when a gating pulse arrives from the delay device 19 20 with the outputs of the respective circuits And 13 and 14 through the circuit

OR 15 and 16, in each coincidence with the specified quantization levels, pulses are passed, which are counted by the address registers 8 and 9, respectively, of groups of channels.

After the conversion process is completed, the control unit 8 receives a pulse of memory cell selection, memory 10, whose address is determined by address register codes 8 and 9, and a unit is added to the contents of this cell with arithmetic unit 7 with the same result address.

Thus, the scales of each converter, controlled by the converters, amplitude-series of pulses becomes non-linear, which makes it possible to compress sections, and thus reduce the required memory size without loss of information.

Claims (1)

Invention Formula A device for recording cascade gamma transitions containing detectors. connect with control converters, amplitude-series of pulses, and with a matching selection circuit, output to a control unit, address registers for selecting groups and channels, an arithmetic unit and a memory device, different TeMi that, in order to reduce the memory size, counters, quantization level switches, logic circuits AND and OR, delay circuits are introduced into it, and the outputs of controlled transducers amplitude-series of pulses are connected to the counter inputs, the outputs of which through level switches q ntovani connected to inputs of logic circuits and whose outputs via respective logic OR circuit connected to inputs of the address group selection registers and channels, the input of each delay circuit connected to the output of controlled converters amplitude-series of pulses, and an output - to an input of respective logic AND circuits,