Uranium cubes reveal why the German nuclear project failed
"Our calculations suggest Heisenberg significantly underestimated the materials required.".
"Our calculations suggest Heisenberg significantly underestimated the materials required."
The short version
- He instantly recognized it as one of the uranium cubes used by German scientists in their unsuccessful attempt to build a working nuclear reactor.
- Only 14 such cubes are known to exist today.
- Heisenberg headed the Berlin group, and as the Allied forces advanced in the winter of 1944, Heisenberg moved his team to a cave under a castle in a small town called Haigerloch—now the site of the Atomkeller Museum .
What happened
That’s where the group built the B8 reactor. It resembled an “ominous chandelier,” per Koeth, because it was composed of 664 uranium cubes strung together with aircraft cable and then submerged in a tank of heavy water shielded by graphite to prevent radiation exposure.
Why it matters
As Heisenberg reported, the German scientists’ final experiment failed because the amount of uranium in the cubes was insufficient to trigger a sustained nuclear reaction.
Summary by Nerd News Network. Read the full article at Ars Technica via the links above and below.