5.2.4 — Half-life

Core

• 5.2.4.1 — Define half-life and use definition in simple calculations (no background correction)

Supplement

• 5.2.4.2 — Calculate half-life from data or decay curves where background radiation is not subtracted
• 5.2.4.3 — Explain how type of radiation and half-life determine appropriate isotopes for smoke alarms, food irradiation, sterilisation, thickness control, cancer diagnosis/treatment