- #1
pf_001
- 6
- 0
Hi, can someonse explain me some things about fission?
Supposedly, the Little Boy bomb consisted of a single bullet of uranium 235 that was to be shot at a bigger mass of uranium 235 to achieve critical mass, then an initiator would introduce a burst of neutrons so fission could occur.
Two things.
1. Why is a mass needed to be shot at another mass to achieve critical mass? Is it because it gets compressed?
2. I keep seeing that splitting an atom of uranium 235 releases 200 MeV according to e=mc^2. Can someone show this to me?
Thanks
Supposedly, the Little Boy bomb consisted of a single bullet of uranium 235 that was to be shot at a bigger mass of uranium 235 to achieve critical mass, then an initiator would introduce a burst of neutrons so fission could occur.
Two things.
1. Why is a mass needed to be shot at another mass to achieve critical mass? Is it because it gets compressed?
2. I keep seeing that splitting an atom of uranium 235 releases 200 MeV according to e=mc^2. Can someone show this to me?
Thanks