noun
a device used in radiocarbon dating to measure the amount of carbon-14 in a sample
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The accelerator mass spectrometer is a powerful tool used in radiocarbon dating.
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They used the accelerator mass spectrometer to figure out how old the artifact was.
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The scientists zapped the sample with the accelerator mass spectrometer to date it.
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The accelerator mass spectrometer acted like a time machine, revealing the age of the ancient artifact.