Answer:

betaray

Answer	Crossword Clue
BETARAY	Radioactive emission
BETARAY	Stream of atomic particles
BETARAY	Electron stream

BETARAY	Radioactive decay stream
BETARAY	Geiger-counter unit
BETARAY	Stream of electrons
BETARAY	Product of a radioactive substance.
BETARAY	Atomic discharge
BETARAY	Tritium output
BETARAY	Product of some decay
BETARAY	Potassium-40 product

BETARAY	Electron particle emission
BETARAY	Emission from radioactive decay