5.2.4 Half-life
- Syllabus
- 0625–2026–2027
- Topic
- 5.2.4
- Level
- —
5.2.4.1—Half-life as the time for half the
- Define half-life as the time for half the nuclei in any sample to decay; use it in simple calculations with tables or decay curves, excluding background radiation
5.2.4.2—Half-life from data or decay curves
- Calculate half-life from data or decay curves from which background radiation has not been subtracted
5.2.4.3—Isotope choice using radiation type
- Explain isotope choice using radiation type and half-life for: (a) smoke alarms (b) food irradiation (c) gamma sterilisation of equipment (d) material thickness control linked to penetration/absorption (e) cancer diagnosis/treatment using gamma rays
Objective notes
3 learning objectivesConceptIGCSE Physics