Fission Definition and 321 Threads

During the fission of an atom of uranium-235, 200 Mev are released. If the average time between generations of fission reaction is 10e-14 seconds and if each fission reaction gives rise to two fissions in the next generation, calculate the time required to go from the first fission to 100 Kw...

A gallon of gasoline releases 1.91×108 J of energy when it is burned. How many gallons of gas must be burned to release the same amount of energy as is released when 1.87 lb of 235U undergoes fission. (Assume that each fission reaction in 235U releases 181 MeV.) I know this- # gal of gas *...

Can someone help me on this problem? Here's my work :) Calculate the energy released in the fission reaction: n + 235/92U-> Sr-88 + Xe-136 + 12n Use appendix D, assume the initial KE of the neutron is very small It can be seen that when the compound nucleus splits, it breaks into...

When one looks at the diagram neutron energy vs. probability of fission \sigma_f (measured in barns) there is a zone of resonance, characterized by peaks and valleys on the function \sigma_f. Why doesn't conventional nuclear power plants works in this zone, instead of using a moderator to slow...

hey need to write a paper on the advantages and disadvantages of nuclear fission.. this is briefly what i have come up with: Advantages: 1) Nuclear Power: efficient and a good alternative to coal which is exhaustible.. Disadvantages: 1) It resulted in the development of atomic...

I thought this was interesting. On The History Channel there was a show about the crew of the Enola Gay - dropped first atomic bomb on Japan. In the diary of one crewman he comments that as they were hit by the blast wave, another crewman commented that "you can taste fission". "It tastes like...

I'm looking to find out about how much mass is converted to energy during the fission of a U-235 atom. I know that it can differ, depending on how the nucleus is split, but an estimated average would be good. I don't know if it matters, but I'm talking about the fission in a nuclear bomb.

topic pretty much explains it. why is it that fusion releases more energy than fission?

Is it know why the Earth's core, and indeed the cores of other planets, are "hot" while some are cold? Is it possible that fusion or fission processes are taking place there ?

This is probably an easy question for most of you, but me nor my teacher knew. Today we learned that nuclear fission can occur when a neutron "hits" the nucleus of Uranium-235. What i wanted to know is, where does this neutron come from, and how can they make it hit this uranium-235 atom. Any...

could anyone explian how do we get energy from the nuclear fusion and fission thx isnt that fission requires bindling energy which use up energy

Dear forum contributer, The binding energy of a heavy nucleus is about 7 Mev per nucleon, whereas the binding energy of a medium-weight nucleus is about 8 Mev per nucleon. Therefore, the total kinetic energy liberated when a heavy nucleus undergoes symmetric fission is most nearly (A) 1876...

Why do we need much more energy for fusion than fission? PS: I apologize for my bad English,

OK, this is a question probably asked and answered before, but I've been wondering about this for years... Alkatran made a comment in the space-buoy thread about how mass changes with speed in SR. As you approach the speed of light, your mass increases towards infinity, and it would take...

"nuclear" fission produces quark mass A top quark is roughly 32 times more massive than a bottom quark. A charm quark is roughly 8 times more massive than a strange quark. And a down quark is roughly 2 times more massive than an up quark. In nuclear fission 2 neutrons yield 4 neutrons...

Hi, just unsure about a question I wonder if you can help me with: How do the neutrons released after nuclear fission differ from those absorbed to begin the reaction in the first place. I think this may be asking me about delayed neutrons, but this is more to do with how the neutrons are made...

hi guys, I am just wondering is it possible in reality to construct a fission reactor that will operate for decades or even centuries without refueling? Theoretically, we can do so if the macroscopic absorption cross section for the fertile nuclide equals that for the fissile species. and few...

another question. consider the possibility of designing a fission reactor that will operate for decades or even centuries without refueling. limit the investigation to thermal reactors with reaction rates = 2200 m/s cross section. Consider 3 fissile/fertile combinations: 1) Fissile= U-233...

Problem 19. At the point of fission, a nucleus of 235_U that has 92 protons is divded into two smaller spheres, each of which has 46 protons and a radius of 5.9*10^-15m. what is the magnitude of the repulsive force pushing these two spheres apart? Use 8.99*10^9 N*m^2/C^2. Note: How can you...

Could the center of the Earth's core be a critical mass of U-235 or other heavy metals, sustaining a fission reaction. (or might fusion be possible with the presures and magentic fields there? ). If not Earth what about Jupiter or larger exra solar planet? Merlin

Does Barium-144 have any useful purpose? All I really know about it is that it is a product of fission (one of the fission fragments from Uranium), which then decays into La-144, Ce-144, Pr-144, and Nd-144. Some radioisotopes are used in the medical field. What does Barium-144 bring to...