![]() ![]() A Geiger meter uses energy compensation to create a reading of the dose. The device that you’re using to measure radiation can then also tell you the dose rate, although the conversion from CPM to dose rate will vary based on your specific device and some other factors, such as the kind of radiation. So the CPM amount doesn’t show you the amount or strength of the radiation. Instead of showing how much radiation something is giving off, the CPM radiation levels tell how many detection events the meter picks up. ![]() A different level of measurement tends to be used for rays, including gamma rays and X-rays. The counts per minute measurements are generally used to pick up the number of particles around, which could include alpha or beta particles. ![]() View Radiation Detectors that Measure CPM You might sometimes see counts per second, or CPS, instead, or you can easily convert from CPM to CPS if you’d like by dividing your CPM value by 60. When you get a Geiger counter and are learning how to use it, you’ll need to know about CPM, which is the counts per minute that you’ll see displayed on the analog meter in addition to the corresponding level of radiation. What Are Counts Per Minute in Radioactivity? ![]()
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