A particle radiation detection method and detection device
A technology of particle radiation and detection method, which is applied in the direction of X-ray energy spectrum distribution measurement, etc., can solve the problems of particle energy spectrum measurement value distortion, pulse signal flattening, pulse analysis distortion, etc., to simplify circuit design, reduce complexity, and improve reliability effect
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Embodiment 1
[0068]This embodiment provides a particle radiation detection method, such asFigure 4 As shown, the method includes:
[0069]S1: Detect particles in the space to be measured, and convert the detected particles into charge signals;
[0070]The particles in the space to be measured are incident on the sensor and are continuously deposited in the sensor, which converts the incident particle energy deposited in the sensor into a weak charge signal.
[0071]S2: Convert the charge signal into an electric pulse signal;
[0072]In order to facilitate technical implementation and reduce the influence of circuit noise, it is usually necessary to convert the weak charge signal in the sensor into an electric pulse signal, and to amplify the electric pulse signal for output. The output electrical pulse signal is a symmetrical electrical pulse signal usually asfigure 2 Shown in the form of quasi-Gaussian function. The Gaussian function signal can be expressed by the following formula (1):
[0073]
[0074]Among th...
Embodiment 2
[0099]This embodiment provides a particle radiation detection method. The similarities with the first embodiment will not be repeated here. The difference is:
[0100]In this embodiment, the discrimination voltage threshold is set with two or more voltage thresholds. For example, in the preferred embodiment of this embodiment, two voltage thresholds are set: a first voltage threshold ν1 and a second voltage threshold ν2, v2>v1, when the electrical pulse signal voltage is greater than v1, the output first logic signal is logic 1, otherwise it is 0; when the electrical pulse signal voltage is greater than v2, the output second logic signal is logic 1, otherwise it is 0.
[0101]For example, in a preferred embodiment of this embodiment, set ν1=0.1V and ν2=1.0V, when the signal voltage is greater than 0.1V, use ν1=0.1V as the screening voltage. According to the aboveFigure 5 According to the analysis, the pulse width is from 0.5 to 3 times the half-width M, and the corresponding amplitude cha...
Embodiment 3
[0106]This embodiment provides a particle radiation detection device, such asFigure 7 As shown, the particle radiation detection device includes a particle detector, a signal pickup and amplifier, a trigger threshold discriminator, a pulse analyzer, and a counter.
[0107]The particle detector is used to detect particles in the space to be measured. For example, it can include a probe and a sensor. The probe collects incident particles in the space to be measured. The incident particles are continuously deposited in the sensor. The sensor converts the deposited incident particle energy into weak Charge signal.
[0108]The signal pickup and amplifier are electrically connected to the particle detector to obtain the above-mentioned weak charge signal, and amplify and convert the charge signal into an electrical pulse signal. In order to facilitate technical implementation and reduce the influence of circuit noise, it is usually necessary to integrate the sensor The weak charge signal is con...
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