0
What else can I help you with?
What is potential barrier in nuclear fission?
A potential barrier in nuclear fission refers to the energy threshold that must be overcome for a nucleus to undergo fission. This barrier arises from the balance of forces within the nucleus, including the strong nuclear force that holds protons and neutrons together and the electrostatic repulsion between positively charged protons. To initiate fission, the nucleus must absorb enough energy (such as from a neutron) to overcome this barrier, leading to its deformation and eventual splitting into smaller nuclei. This concept is crucial for understanding the conditions necessary for sustained nuclear reactions in reactors or bombs.
What is the process of obtaining energy from the spontaneous splitting of a large nucleus called?
Nuclear energy, but to get substantial energy release it is no good relying on spontaneous fission, which only occurs at a very low rate. The nuclear fuel must be arranged in a lattice with a moderator to create a significant chain reaction.
How can mass be converted into nuclear fission and fusion reaction?
There is a misunderstanding here. It is a fine, but very important point. Mass can neither be created nor destroyed, and energy can neither be created nor destroyed.There is a relationship between mass and energy, in the relativistic framework set down by Einstein in his famous mass-energy equivalence equation e = mc2. Do not misunderstand, however - this does not mean that mass can be converted to energy and vice versa - it means that mass has energy, and energy has mass, all depending on relativistic velocity.In nuclear fission, the nuclear force (residual binding energy) that holds protons and neutrons together in an atom is greater than the nuclear force required to hold the protons and neutrons together in the split atoms that result from the fission process. The differential nuclear force, or mass deficit, is released during fission. It is more correct to say that the mass is carried away with the energy, because the mass is the energy and the energy is the mass, as stated above.
Describe the electron behavior in nuclear fission?
Nuclear fission concerns the behaviour of the nucleus, the protons and neutrons in it and their binding energy. The electrons don't affect the fission, but they get shared out between the two fission fragments.
What is the speed of nuclear fission?
In an atomic bomb the time between fission generations is about 10ns and the entire reaction is over in 1us to 3us. In an atomic reactor the time between fission generations is about 10us because each neutron must collide about 1000 times with moderator atoms to slow down to "thermal" speeds.
What energy is the energy that is stored in an atoms nucleus?
The energy stored in an atom's nucleus is nuclear energy. This energy is released through processes like nuclear fusion or fission, which involve manipulating the nucleus of an atom to release large amounts of energy.
What reaction must uranium undergo in order to release energy?
Nuclear fission with thermal neutrons
Division of nuclear material is called?
Nuclear fission refers to the process of dividing the nucleus of an atom into two or more smaller nuclei, releasing a large amount of energy in the process. This is the principle behind nuclear power plants and nuclear weapons.
When a nucleus splits the mass number is equal to?
Einstein informs us that mass-energy is conserved in nuclear fission, therefore the mass of the original atom, in joules per c2, must be the same as the sum of the masses of the daughter particles, in joules per c2, plus the energy released in the fission, in joules.
What happens to nuclear energy before it is used?
Nuclear energy is released as heat in the fuel of a nuclear reactor, but only when the reactor has been brought to criticality and the chain reaction started. At that point the heat must be used, it can't be stored and used later. Before criticality is established, the reactor is shutdown and producing no nuclear heat from fission, so you could regard it as having potential nuclear energy in that state
Why do some scientists believe nuclear fusion is better than fission in a reaction?
Fusion produces no radioactive waste, and can yield a constant flow of energy instead of in nuclear fission where a nuclear power plant must be refueled and closed for 40-100 days out of the year.
What is potential barrier in nuclear fission?
A potential barrier in nuclear fission refers to the energy threshold that must be overcome for a nucleus to undergo fission. This barrier arises from the balance of forces within the nucleus, including the strong nuclear force that holds protons and neutrons together and the electrostatic repulsion between positively charged protons. To initiate fission, the nucleus must absorb enough energy (such as from a neutron) to overcome this barrier, leading to its deformation and eventual splitting into smaller nuclei. This concept is crucial for understanding the conditions necessary for sustained nuclear reactions in reactors or bombs.
What is the starting material for nuclear fission?
You must not ask "what element", but "what isotope". Uranium-235 is one example of an ISOTOPE that is appropriate for nuclear fission. Uranium-238 is the same for chemical reactions, but for purposes of nuclear reactions, different isotopes must be considered to be different types of atoms.
Why does an atom blow up if you split it in half?
An atom does not "blow up" if you split it, but it will give off a tremendous amount of energy (in proportion to what is actually happening). If an atom was to "split" as asked, we'd consider it to have undergone nuclear fission. In fission, the atom "breaks" approximately in half, and the two "pieces" (which are called fission fragments) will recoil from the site of the event. In that light, an atom might be said to have "blown up" like it had been hit with something. In nuclear fuel, fission fragments recoil into the matrix in which they are being held, and this is expressed as heat. The recoil of the fragments accounts for a lot of the energy of the fission event. Note that in the fission talked about in many science classes, an atom of fissionable material is "hit" by a neutron and this causes a fission. This isn't quite accurate. The atomic nucleus must capture the neutron, and nuclear instability will result. Then the fission occurs. The atom is not "smashed" or "broken" by the "impact" of a neutron.
How does nuclear energy extracted from the ground?
Nuclear energy is not extracted from the ground like fossil fuels. It is generated through a process called nuclear fission in nuclear reactors. Uranium atoms are split in a controlled chain reaction, releasing energy in the form of heat, which is then used to produce electricity.
What must you know about a nuclear reaction to calculate the amount of energy it will produce answers apex?
To calculate the amount of energy produced in a nuclear reaction, you need to know the type of reaction (fission or fusion) and the mass difference between the reactants and products. This mass difference can be used in Einstein's famous equation, E=mc^2, to determine the energy released during the reaction. Additionally, the binding energy per nucleon of the nuclei involved is also crucial in estimating the energy output of a nuclear reaction.
What is the process of obtaining energy from the spontaneous splitting of a large nucleus called?
Nuclear energy, but to get substantial energy release it is no good relying on spontaneous fission, which only occurs at a very low rate. The nuclear fuel must be arranged in a lattice with a moderator to create a significant chain reaction.
