Jinsi ya kukokotoa Radioactive Decay
Radioactive Decay ni nini?
Radioactive decay follows exponential decay law. The decay rate depends on the decay constant and the number of remaining nuclei.
Fomula
The calculator applies N(t) = N₀ × e^(-λt) or A(t) = A₀ × e^(-λt)
- N
- N₀ × e^(-λt) or A(t) = A₀ × e^(-λt) — N₀ × e^(-λt) or A(t) = A₀ × e^(-λt)
- A
- A₀ × e^(-λt) — A₀ × e^(-λt)
Mwongozo wa Hatua kwa Hatua
- 1Enter initial activity or mass, decay constant (or half-life), and elapsed time
- 2The calculator applies N(t) = N₀ × e^(-λt) or A(t) = A₀ × e^(-λt)
- 3Results show remaining nuclei or activity
Mifano Iliyotatuliwa
Ingizo
N₀ = 1 mol (6.022 × 10²³), λ = 0.693/5730 yr⁻¹ (¹⁴C), t = 5730 yr
Matokeo
N ≈ 0.5 mol (50%)
One half-life
Makosa ya Kawaida ya Kuepuka
- ✕Using decay constant instead of half-life without converting
- ✕Assuming linear decay instead of exponential
Maswali yanayoulizwa mara kwa mara
Can radioactivity be accelerated or stopped?
No, decay rate is determined by nuclear physics and cannot be changed by temperature, pressure, or chemistry.
What's the difference between activity and amount?
Amount is number of nuclei (decreasing exponentially); activity is decay rate (also decreasing, at same rate).
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