Detecting Radiation: Methods and Equipment

Radiation detection is a complex process that requires specialized equipment and methods. There are several instruments and techniques used to detect radiation, such as film badges, gas ionization devices, Geiger-Muller counters, radon detectors, personal radiation detectors, fog chambers and scintillation counters. The most common type of radiation detector is a Geiger-Mueller (GM) tube, also known as a Geiger counter. The three main types of radiation detectors are gas ionization based detectors, scintillation detectors and semiconductor detectors.

Dosimeters, also known as radiation plates, are used by workers who are regularly exposed to radiation-filled environments. The badge helps track the level of radiation the person is exposed to and at the end of the trimester or year, a specialist will obtain the dosimeter data and interpret them. If the radiation plate shows a large amount of exposure above the threshold, an alarm will sound to alert people to stay away from the environment. The Med-Pro dosimeter also allows workers to track their radiation intake online, allowing them to get their results more easily and quickly.

The GM probe in the Geiger counter is a common portable radiation instrument for measuring contaminated surfaces. It can be adapted to other modalities; for example, a zinc probe is sensitive to alpha radiation detection. A compact dosimeter is highly recommended for your home. Dosimeters measure alpha, beta, x-ray and gamma radiation and can assess radioactive contamination within food, air and water.

Some specialized dosimeters can work via Bluetooth channels and activate your tablet and smartphone on a personal dosimeter. 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. 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. When it comes to detecting tissue radiation, you can convert these factors to get the right results.

Fortunately, these devices allow you to detect radiation and know if your environment makes you vulnerable. A fog chamber is another device used to detect radiation. It contains air and an electrical conductor, as well as a low-voltage central anode to help detect radiation. A teletector is specifically designed to detect gamma and X-ray radiation. A gamma-ray radiation source is mounted on one side of the pipe and a radiation detector is mounted on the opposite side. In addition to a radiation detector, a monitoring or measurement configuration includes several electronic units such as a power unit for supplying the high voltage, an amplifier system for amplifying the small electrical current initially produced by the detector, a timing unit to run the count system for a predetermined time, a pulse height analyzer for sorting incoming electronic information for radiation spectrometry etc. Med-Pro Harshaw radiation detectors are especially useful for workers who come into contact with radiation through their fingers since these devices are used as armbands.

A second part of this study was conducted at the EPA's National Air and Radiation Environmental Laboratory (NAREL) to determine if a commercially available radiation detector designed for water systems can show a response to radionuclide injections.

Isaac Delpozo
Isaac Delpozo

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