scintillometer survey A geophysical prospecting method using a scintillation detector in which radioactivity causes crystals to emit flashes of light which can be recorded by a photomultiplier tube. It is much more sensitive than methods using a Geiger counter and can distinguish different types of radiation.
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Scientists' Answers to the Hypothetical Question: "What Are the Pressing Scientific Issues for the Nation and the World, and What Is Your Advice on How I Can Begin to Deal with Them?" Twenty-First Century U.S. President (2003)