How do we detect radiation?

Radiation detection is achieved through the use of a variety of instruments. The most common type of radiation detector is a Geiger-Mueller (GM) tube, also called a Geiger counter. Many people, thinking about radiation detection, tend to group them all under the term “Geiger counters”, a misconception heartily encouraged by popular TV shows and movies. While one of the most common types of radiation detectors is called a “Geiger Mueller (G-M)” tube, the general phrase “Geiger counter” is not always the most appropriate.

It applies to a very specific type of detector and, in general, to a specific application of that detector. Radiation detection devices are typically classified by the type of detector element employed or by the application involved. People will refer to the instruments as an ion chamber, a probing meter, a pollution meter, or a Frisker probe. Popular culture has so profoundly subverted the proper use of “Geiger Counter” that the use of the phrase generally does not provide enough information about the device in question.

An RIID is a radiation detector with the ability to analyze the energy spectrum of radiation, in order to identify the specific radioactive material (radionuclide) emitting radiation. As the name implies, the topographic meter is a portable radiation detector, which typically measures the amount of radiation present and provides this information on a numerical display in units of counts per minute, counts per second, or microroentgen (µR) or microrem (µrem) per hour. Alpha radiation cannot be detected because it is blocked by the mobile phone case, lens and cover. The advantage of using a smartphone application in radiation detection is that it is cheap, easy to operate and accessible, since many people own smartphones.

When talking about radiation detection instruments, there are three types of detectors that are most often used, depending on the specific needs of the device. Advanced image sensors installed in smartphones, now ubiquitous, can be used to detect ionizing radiation in addition to visible light. Although they are designed to detect visible light, they can also detect the higher energies of ionizing radiation. The advantage of using a smartphone app in radiation detection is that it is cheap, easy to operate and accessible, since many people have smartphones.

In addition, as the distance increased, the dose rate decreased and, consequently, the radiation detected by the application decreased. A particular meter, known as a teletector, is specifically designed to detect gamma and X-ray radiation. Nor should the response of an ionizing radiation detector depend on the angle of impact of the radiation. The second main type of detectors used in radiation detection instruments are scintillation detectors.

This work aims to inform a detailed investigation of a well-reviewed smartphone application for radiation dosimetry that is available for popular smartphone devices under a calibration protocol that is typically used for commercial calibration of radiation detectors. This error analysis quantitatively shows that the RadioActivityCounter application can effectively function as a radiation detector at high radiation doses; however, at low doses, the application returns a high error percentage as presented in Fig. They can be replaced irregularly by using a smartphone app to detect harmful radiation, such as that caused by gamma rays. .

Isaac Delpozo
Isaac Delpozo

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