Do we need to buy a nuclear radiation environment monitor?

In physics, radiation refers to the transfer of energy in the form of waves or subatomic particles in a vacuum or medium. greentest eco 6 In general, it can be ...

Nov 23,2023 | Dreamy

In physics, radiation refers to the transfer of energy in the form of waves or subatomic particles in a vacuum or medium. greentest eco 6 In general, it can be divided into ionizing radiation and non-ionizing radiation based on its energy level and ionizing capacity. Ionizing radiation can be divided into alpha particles, beta particles, neutrons, X-rays, and gamma rays. The main function of a particle detector is to detect the "content" of these particle waves in the object to be measured.

In fact, we learned the ability to detect radiation in high school, the Geiger-Miller counter, which is usually used to detect alpha and beta particles. radioactive detection As manufacturing techniques have evolved over the years, Geiger-Miller counters have been able to measure gamma rays more accurately.

The detector of the Geiger-Miller counter is usually to add a thin gas (doped helium, norepinephrine, argon and other inert gases) in the metal tube, seal the insulation material at both ends, install the wire electrode along the tube axis, radiation detectors for sale and add a voltage between the tube wall and the wire electrode that is slightly lower than the breakdown voltage of the gas in the tube. In this way, the gas in the tube does not discharge under normal circumstances, but when the high-speed particle enters the tube, the energy of the particle ionizes the gas in the tube, resulting in a rapid discharge of the gas between the wire and the tube wall, thus outputting the pulse current signal.

Therefore, we can calculate the radiation dose in the current environment by counting the number of discharges of the electrode per unit time. According to the published patent, the nuclear radiation detector usually consists of a Geiger-Miller counter, a signal amplification circuit, a single-chip microcomputer (MCU) circuit, a liquid crystal display circuit, an alarm circuit, a DC high-voltage generation circuit, and a power supply circuit. The positive end of the Geiger-Miller counter is connected to the DC high voltage generating circuit, and the negative end is successively connected to the signal amplifying circuit, MCU circuit and liquid crystal display circuit. The MCU circuit is also connected with an alarm circuit, and the output of the power circuit is connected to the working voltage input of the circuit.

Geiger-miller counter A is connected to the DC high voltage 400V output of the DC high voltage environment circuit F at the positive end, and the network signal is connected successively at the negative end through the amplifier circuit B, the single chip microcomputer circuit C, and the liquid crystal data display module circuit D. The MCU circuit C is connected with the alarm circuit E at the same time; The +5V voltage output results of the power supply circuit G are respectively used as connections to provide voltage inputs to solve the work of the above analysis circuit. Of course, this is only the circuit technology solution presented by the patent, and it will affect the understanding of a specific product.

In simple terms, when a Geiger-Miller counter picks up a ray, it sends out an electromagnetic pulse, passes through an amplifier, and counts it into a microcontroller, which tells the user the radiation level by quickly or slowly counting the sounds of an alarm circuit.

subatomic particles pulse current signal