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A 56-kg sphere of u-235 constitutes a critical mass. If the sphere were flattened into a pancake shape, would it still be critical?

Respuesta :

It wouldn't be as important in this circumstance.

What is Critical mass?

In nuclear engineering, a critical mass is the smallest amount of fissile material needed for a sustained nuclear chain reaction. The critical mass of a fissionable material depends upon its

  • nuclear properties,
  • density, shape,
  • enrichment,
  • purity,
  • temperature,
  • surroundings.

The pancake-shaped U-235 sphere will initially be unable to absorb as many neutrons because of its flattened form.

Neutrons escape will become important. It wouldn't be as important in this circumstance.

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