The x-ray baggage scanner is an electronic device that uses X-ray scanning and imaging technology to check the safety of luggage. X-ray baggage scanner is a low-risk radiation device, with a much lower radiation level than medical X-ray machines. Next, we take a look at the working principle and safety of the x-ray baggage scanner. Here are some answers.

Here is the content list:

l How does the x-ray baggage scanner work?

l How safe is the x-ray baggage scanner?

How does the x-ray baggage scanner work?

X-rays are a type of electromagnetic radiation with a shorter wavelength than visible light and have a greater ability to penetrate solids and liquids than visible light and can even penetrate steel plates of a certain thickness. When X-rays pass through an item, the internal structure of the item of different composition, density and thickness can absorb X-rays to varying degrees, the greater the density and thickness, the more radiation is absorbed; the smaller the density and thickness, the less radiation is absorbed. The x-ray baggage scanner works similarly to an ordinary document scanner. The x-ray baggage scanner works in a line scan mode, where a highly sensitive x-ray line array detector is driven by a mechanical scanning device to scan the item layer by layer. The image is then reconstructed to show the internal information of the item.

How safe is the x-ray baggage scanner?

The radiation dose of the x-ray baggage scanner is much lower than that of a medical diagnostic X-ray machine and the radiation around the machine is so low that even a full-time operator can work safely without protection. The radiation dose from a hospital X-ray chest x-ray is approximately 50 μGy, which means that it would take 50 hours to stay 5 cm close to the x-ray baggage scanner before it is equivalent to a medical X-ray chest x-ray. And because the equipment is shielded on all sides by a lead curtain of a certain thickness, the radiation dose to the outer surface of the food x-ray inspection machine is reduced by about two orders of magnitude, so that its external radiation levels are in the background range. As a result, even frequent travelers are not exposed to much radiation. Even for security staff, radiation does not affect their health. Based on 365 days per year and 2 times per day through the underground security check, the annual radiation dose received by underground passengers due to the underground security check is no more than 0.01mSv (10μSv), which is only equivalent to 1.5 days of natural background radiation dose or 2 hours of flight by air, therefore, it will not cause harm to passengers. Reaching into the shield strip for your bag will increase the amount of radiation received to some extent and should be avoided at all costs.

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