Modelling Radioactive Decay (VCE SSCE Physics): Flashcards

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Modelling Radioactive Decay
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Radiocarbon dating technique

Determines age of objects with organic material

Half-life definition

Time for half of unstable nuclei to decay

Radioactive decay formula

N=N0(12)nN = N_0 \left(\frac{1}{2}\right)^n

Carbon-14 half-life

5,730 years

Activity of radioactive source

Number of nuclei that decay each second

Unit of activity

Becquerel (Bq); 1 Bq = 1 disintegration/second

Half-life & external conditions

Constant; unaffected by temperature or magnetic fields

Technetium-99m half-life

6.0 hours

Nature of radioactive decay

Completely random process

Predicting decay with large nuclei numbers

Statistical predictions possible

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