![]() ![]() ![]() If you are looking for protection, it should be able to detect beta, gamma, and X-rays. The best one can detect and measure four types of radiation: alpha, beta, gamma, and X-rays, while some can only detect beta, gamma, and x-rays. The ability to measure radiation usually depends on the Geiger-Mueller tube. The number of clicks is a rough indication of how much radiation is present.īefore the counter detects radiation, it needs to be restored to its original state by quenching to counteract the effects of the Geiger discharge. If you connect a megaphone, you can hear a loud click each time a particle is detected. Many electrons travel down the wire, creating a burst of current. Thus, even a single radiating particle can produce electrons in rapid succession, which is called a Geiger discharge. The metal wire runs at a high positive voltage.Īs the electrons go to the metal wire, some electrons collide with other gas molecules such that they split into ions and more electrons. The electrons are attracted to a metal wire inside the tube. Positive ions are attracted to the outside of the tube. Some gas molecules become positive ions and electrons. When the radiation collides with the gas molecules inside the tube, it causes ionization. The radiation enters the window at the end of the tube. The radiation moves randomly outside the detection tube. ![]()
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