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Physics 4.1 (beta particles (fast moving electrons released by the nucleus…
Physics 4.1
beta particles
fast moving electrons released by the nucleus
no mass and a charge of -2
moderately ionising
range of a few metres in air
absorbed by a sheet of aluminium
for every electron emitted a neutrons become a proton
gamma rays
rays of electromagnetic radiation
released from the nucleus
penetrate far into materials
long range through air
do damage when hit something
absorbed by a thick sheet of lead or metres of concrete
alpha particles
two protons and two neutrons
emitted from the nucleus
easily stopped
only travel a few cm in air
strongly ionising