核素存活概率计算器
由衰变常数与时间求存活概率
Survival Probability Calculator (P = e^(−λt))
Compute the probability that a nucleus has not yet decayed from decay constant and elapsed time. For quick estimates of half-life, remaining activity and decay progress.
📐 计算公式
P = e^(−λt)
输入衰变常数 λ 与时间 t，求核素存活概率。
📌 计算说明
- P = e^(−λt)。
- λt=1 → e⁻¹≈0.3679。