K-40

Potassium-40

Natural

β, γ radiation

Half-life: 1.248 billion years

Main emission lines: 1460keV

Where detected

Potassium-40 is found almost everywhere, its peak is observed on all background spectra. In a more concentrated form, it can be found in fertilizers (e.g., potassium chloride), or products that have been grown with such fertilizers.

K-40

Where detected

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