Simple Description

A type of ionising radiation. The nucleus of a helium atom.

Further Detail

Beta radiation is blocked by a few mm of aluminium. Each beta particle (a high enegry electron) has a charge of -1 and a relative mass of 0. Beta radiation is released from the nucleus when a neutron turns into a proton and emits an electron in the process.

Related Words:

• Alpha radiation
• Gamma radiation
• Radioactive

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