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alpha decay
alpha emission
alpha emitter
alpha-fetoprotein
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alpha particle
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alpha ray
al·pha ray (plural al·pha rays)


noun 
Definition:
 
stream of alpha particles: a stream of alpha particles
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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