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Thermal neutrons
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∙ 13y ago
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Is a chain reaction more likely in two separate pieces of uranium or in the 2 combined?
Depending on the total mass of uranium and the enrichment, geometry, purity, etc.
Is a chain reaction more likely in two separate pieces of uranium or in the same pieces stuck together?
separate ------- Depending on the total mass of uranium, purity of uranium, physical form, enrichment, geometry, etc.
Why is a chain reaction more likely in a big pieces of uranium than its in a small piece?
A small piece has more surface area compared to its mass; as a result, more neutrons will escape before they can participate in the chain reaction.
What are the daughter atoms of uranium-235 during the initial chain reaction?
Fission is a form of nuclear transmutation because the resulting fragments are different elements from the original atom. A neutron-induced fission of U-235 results to krypton and barium.
How do you build a homemade chain reaction?
This would be very inadvisable. The simplest way would be to reproduce the 1942 Chicago pile, but how would you get the uranium?
A chain reaction results when a uranium atom is struck by an neutron released by a nearby atom?
This is the process involved in nuclear fission in a nuclear power station. The chain reaction is set off when one neutron is fired into the reactor. It hits a uranium atom which then splits into 2 smaller atoms and 2 more neutrons are released that collide with two more atoms and so on...
What energy source is used for nuclear fuel rods?
uranium. When water is heated, it causes a chain reaction that turns the uranium to plutonium.
Why does a chain reaction not occur in uranium mines?
Mainly because only about 0.7% of uranium is the isotope uranium-235, which is easily fissionable. It is believed that in Earth's remote past, there were such chain reactions - natural reactors - at a time when the percentage of U-235 was higher.
What term describes the reaction process in a fission reaction?
another name for nuclear fission is: E=MC squared
What do fission of uranium produce?
Uranium fission creates a chain reaction that initiates a chain reaction that grows exponentially into a massive conversion of the potential energy inside the uranium atom into kinetic energy in the form of an explosion - a nuclear explosion. These are the bombs that ended WW2. Today we can split H atoms, which release significantly more energy.
Is a chain reaction more likely in two separate pieces of uranium or in the 2 combined?
Depending on the total mass of uranium and the enrichment, geometry, purity, etc.
Why is it that uranium ore does not spontaneously undergo a chain reaction?
Uranium ore contains only a small percentage of uranium for one thing, but also natural uranium contains only 0.7 percent U235. Even pure natural uranium will not cause a chain reaction unless it is surrounded by a moderator such as pure graphite or heavy water. Ordinary water will not allow this to happen.
Is a chain reaction more likely in two separate pieces of uranium or in the same pieces stuck together?
separate ------- Depending on the total mass of uranium, purity of uranium, physical form, enrichment, geometry, etc.
What nucealer bombs are made of?
Basically, nuclear weapons are made from uranium or plutonium material and hydrogen as a chain reaction nucleus.
What causes a chain reaction in uranium?
Each atom, when split, releases one or more neutrons. Those neutrons go on to destabilize and split other atoms. This is the "chain reaction" we talk about. The multiplication factor, known as Keffective represents the rate of increase in reactivity. If Keffective is 1, then, on average, one atom's split results in one neutron that splits one atom.
What is uranium used for in power plants?
The isotope uranium-235 will fission when struck by neutrons, releasing energy in the form of heat and more neutrons which fission more uranium-235 (chain reaction). The heat is used to boil water (as in coal or oil power plants) and the steam turns turbines. The spinning turbines turn electric generators, making electricity.
Why is a chain reaction more likely in a big pieces of uranium than its in a small piece?
A small piece has more surface area compared to its mass; as a result, more neutrons will escape before they can participate in the chain reaction.
