3 ms·
The fallout by mass isn't primarily the direct daughter products of the fission. It's the thousands of tonnes of pulverised dirt and rock (and concrete and ste
by caf 5y ago
The fallout by mass isn't primarily the direct daughter products of the fission. It's the thousands of tonnes of pulverised dirt and rock (and concrete and steel and...) that has been neutron-activated and ejected high into the atmosphere.
- refurb 5y agoThis was my understanding as well. Radiation levels of daughter products from the weapon drop quite quickly. But the dirt that’s been neutron activated can take a while to come back down and the exposure levels are much higher.