Questions about pure uranium-235 and chain reactions?

Question

1. What happens in a chain reaction? What role do neutrons have in a chain reaction?

2. Why is pure uranium-235 needed for a chain reaction?


3. Why is a large mass of uranium-235 needed for a chain reaction?

Answer 1

Hey! Blow yourself up! keep us out of this!!

Answer 2

Chain Reaction Of Uranium 235

Answer 3

1. In a chain reaction, neutrons from one fission event hit other U-235 atoms and set off more fission events.

2. Highly enriched U-235 is needed for a chain reaction, because U-238, which is by far the more common isotope, does not fission when hit by a neutron.

3. A mass of U-235 called the critical mass is needed. This is because if you have too small an amount of U-235, then a lot of the nutrons produced by a fission may escape from the mass without hitting other U-235 atoms. For a chain reaction, you need enough U-235 so that every neutron from ever atom that fissions hits another U-235 atom, and so on.

Answer 4

Chain reactions are reactions taking place i a large enough mass to trap products of reactions and promote additional reactions. Can include neutrons, and other byproducts of nucleur reactions.
2.Don't ask. Curiosity killed the cat. Nucular curiosity can do worse.
3. Each element and each isotope in the radioactive series has a critical mass. Lets just say that in the Plutonium series, one ounce will be a critical mass if it the correct isotope.

Answer 5

certain it really is called fission. and no you do not definitely hit both rocks of uranium at the same time and get an massive volume of ability launched. Fission is a nuclear reaction in which the nucleus of an atom splits into smaller parts generating free neutrons and photons interior this kind of gamma rays. One form of nuclear weapon, a fission bomb, aka the atomic bomb, is basically a fission reactor designed to launch as a lot ability as accessible as right now as accessible, formerly the launched ability motives the reactor to blow up (ending the nuclear reaction). the bombs used on Hiroshima and Nagasaki, Japan in 1945 were called "little boy" and "fat guy". Little Boy weighed a finished of about 4 lots of which 60 kg replaced into nuclear gasoline, even if the resultant explosion replaced into equivalent to about 15 KILOTONS of Trinitrotoluene (TNT) fairly unhappy imo. what do you want to verify about this for besides? i'd somewhat you start up attending to be conscious of a very good renewable ability source! no longer a unclean one like this.

Answer 6

My professor in Nuclear Power compiled a great homepage for all this information and their links. Your best bet is to check out this link:
http://atom.kaeri.re.kr/ton/nuc7.html

It looks complicated, but all you have to do is type in 'U235' into the search bar at the upper left corner. The rest is fun to figure out.

As for more information check out the useful links section at the bottom of the class homepage:

https://netfiles.uiuc.edu/mragheb/www/NPRE%20402%20ME%20405%20Nuclear%20Power%20Engineering/index.htm#Nuclear%20Data%20for%20Isotopes%20and%20Elements