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alpha emitter

noun
1.
a radioactive isotope that emits alpha particles
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Examples from the Web for alpha emitter
Historical Examples
  • One such reaction uses alpha particles emitted by polonium-210 (or some other alpha emitter) to bombard the element beryllium.

    The Atomic Fingerprint Bernard Keisch

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