The original reactor built in 1942 was just barely
Chapter 13, Problem 62(choose chapter or problem)
The original reactor built in 1942 was just barely criticalbecause the natural uranium that was used containedless than 1% of the fissionable isotope U-235 (half-life713 million years). What if, in 1942, the Earth had been9 billion years old instead of 4.5 billion years old? Wouldthis reactor have reached the critical stage with naturaluranium?
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