Uncovering Residual Radiation from Ancient Atomic Bomb Detonations

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SUMMARY

The discussion centers on the detectability of residual radiation from ancient atomic bomb detonations. Participants agree that while initial blast radiation dissipates quickly, long-lived radioactive isotopes from Uranium and Plutonium fission can remain detectable for thousands of years. Factors such as the bomb's size and type, as well as environmental influences like erosion and subduction, significantly affect the persistence of these isotopes. The consensus is that evidence of atomic detonations may remain detectable under certain conditions, but not universally.

PREREQUISITES
  • Understanding of radioactive isotopes produced by fission
  • Knowledge of environmental factors affecting radiation spread
  • Familiarity with atomic bomb types and their characteristics
  • Basic concepts of geological processes such as erosion and subduction
NEXT STEPS
  • Research the long-lived isotopes produced by Uranium and Plutonium fission
  • Study the effects of environmental factors on radiation dispersion
  • Examine different types of atomic bombs and their radioactive byproducts
  • Explore geological processes that influence the detectability of radiation over time
USEFUL FOR

Physicists, environmental scientists, historians studying nuclear events, and anyone interested in the long-term impacts of atomic bomb detonations.

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If we blew up an atomic bomb on a spot could a physicists thousands of years in the future picup the radiation and know we did it?
 
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Not the initial blast radiation I don't think, but certainly they could detect radiation from the various radioactive isotopes that are produced by the fission of the Uranium (or Plutonium). One big danger of atomic weapons is the fact that they produce many long-lived, highly radioactive particles that can contaminate regions for thousands of years.

Claude.
 
The question cannot be answered without providing additional information.

There are parts of the Earth's crust which are constantly being eroded away, parts that are undergoing subduction, and so on. Water, wind, flora and fauna can all affect how quickly the radioisotopes are spread from the site.

The size and type of bomb must also be known. Different kinds of bombs produce different radioactive products.

Also, "thousands of years" is not a very precise way to express time.

All in all, I'd say that, in some cases, the evidence would remain detectable for thousands of years, but in other cases, it wouldn't.

- Warren
 

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