SU1430917A1 - Scintillation time-run spectrometer - Google Patents

Abstract

The invention relates to scintillation detectors of ionizing radiation and is intended to determine the energy distribution of particles from a pulsed radiation source according to the shape of the pulse from the scintillation detector and the time of the transit spectrometer. The purpose of the invention is to improve the accuracy of measuring the pulse shape of the time of the transit spectrometer in a wide dynamic range of the particle flux density. The spectrometer consists of the main 2 and additional 4 scintillation detectors, a delay line 6, an extension cord 5 And | a 3-channel pulse shape analyzer, the output of the additional scintillation detector 4 being connected to the threshold input of the 5-channel pulse shape analyzer 3 through the pickup device, and the output of the main detector 2 connected via the delay line 6 to the main input of the p-channel analyzer 3 form momentum. Accuracy increase is achieved by controlling the measurement range of the n-channel analyzer with the pulse amplitude from the additional detector. 1 il. (O ate 4 00 O CO

Description

The invention relates to nuclear physics, in particular, to scintillation detectors of ionizing radiation, and is intended to determine the energy distribution of particles from a pulsed radiation source, such as neutrons, in the diagnosis of a laser plasma.

The purpose of the invention is to improve the accuracy of measuring the pulse shape from the main scintillation detector, the time of the transit spectrometer in a wide dynamic range of the particle flux density.

The drawing shows a block diagram of a scintillation time-transit spectrometer.

The scintillation time-of-flight spectrometer contains a source of 1 measured radiation, a main scintillation detector 2, a n-channel analyzer 3 pulse forms, an additional scintillation detector 4, an extension of 5 pulses, and a delay line 6, and the analog output of the main scintillator 2, through a delay line 6, is connected to the main input of the pulse waveform meter 3, the input of the pulse extender 5 is connected to the analog output of the additional scintillator detector 4, and the output to the threshold signal meter row 3 waveform, 3 meter output waveform is the output device, the distance from the radiation source 1 until additional scintillation detector 4 - 1, and the distance from the radiation source 1 to the main scintillation detector 2 - L.

The operation of the proposed scintillation time-of-flight spectrometer is based on controlling the thresholds of the drivers in the pulse shape analyzer from the amplitude of the signal from the additional scintillation detector, which is proportional to the number of particles from the radiation source and the amplitude of the signal from the main scintillator of the Dion detector ,.

I

When particles are generated in the radiation source 1, an additional scintillation detector 4, which may be small, is initially located near the radiation source 1, since the particle flux near the radiation source 1 is much larger than in the area

Q 5

0 5 0 Q

ABOUT

five

five

five

a new sci-tal detector 2, the distance of which from source 1 is determined by the necessary broadening of the time distribution of particles. The signal from the additional scintillation detector 4 is fed to an extension of 5 pulses, at the output of which a signal appears that is equal in amplitude to the signal from the additional scintillation detector 4, and in duration exceeds the signal duration from the main scintillation detector 2 and the response time of the meter 3 momentum.

When performing the ratio

bll.T.biUT ,,

where T. is the response time of the electronic components;

T - the value of the delay in line 6 of the delay;

V is the velocity of the most energetic particles;

C - propagation speed

Claims (2)

the electrical signal, the thresholds in the meter 3 pulse forms are set before the moment of arrival of the signal from the main scintillation detector 2. Meter 3 pulse pattern. Prepare a signal processing with a specific amplitude corresponding to the particle flux in the radiation source 1, using all the channels in the pulse wave meter 3 to measure any of the intensity of the particle generation event. Scintillation time is a transit spectrometer, consisting of a main scintillation detector and a p-channel pulse shape analyzer, characterized in that, in order to improve the accuracy of measuring the pulse shape in a wide dynamic range of the particle flux, an additional SCINTILLATION detector and a pulse extender, the input of which is connected to the analog output of the additional scintillation detector, and the output to the threshold input of an n-channel pulse shape analyzer, and erzhki whose input is connected to the output of the main scintillation tsionnogodetektora, and an output - to main input p-channel analyzer pulse shape.