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What are the disadvantages of nuclear fission and fusion?
For fusion, the main disadvantage is that nobody has been able to make it work. However it does have promise and if it can be developed it will not produce the dangerous fission products that fission does. For fission, see reply to question 'What are the disadvantages of nuclear fission power'
How does a nuclear disaster occur?
A nuclear disaster may occur when the radioactive materials are mishandled and which may lead to radioactive exposure or a chain reaction of nuclear fission, fusion. Most of these disasters are induced by the man made mistakes.
What nuclear reaction was discovered in 1939 that would later lead to the development of the atomic bomb?
Fission of Uranium-235
What is correct for a nuclear fission reaction?
In a nuclear fission reaction, the nucleus of an atom is split into two smaller nuclei. This process releases a large amount of energy and typically involves the use of a neutron to initiate the reaction. The resulting smaller nuclei and additional neutrons can then go on to potentially initiate further fission reactions.
How is a nuclear reaction controlled?
Nuclear fission reactions usually depend on neutrons released by fission, which cause more fission in a chain reaction. The neutrons are in what is termed a neutron flux, which really means just that there are a lot of them there. If the flux is insufficient, the chain reaction stops. If it is too dense, the reaction overheats, which can lead to meltdown. Clearly, a way to control this is necessary. The control rods are made of materials that absorb neutrons. By adjusting them, the density of the neutron flux can be increased and the fuel made hotter, or it can be decreased, and the fuel made cooler. Adjusting them means changing their exposure to the fuel, for example, by changing how far they go into the fuel. They can be used to stop the chain reaction by inserting all of them all the way.
what is fission chain reaction how can it be controlled?
Fission chain reactions occur because of interactions between neutrons and fissile isotopes (such as 235U). The chain reaction requires both the release of neutrons from fissile isotopes undergoing nuclear fission and the subsequent absorption of some of these neutrons in fissile isotopes. When an atom undergoes nuclear fission, a few neutrons (the exact number depends on several factors) are ejected from the reaction. These free neutrons will then interact with the surrounding medium, and if more fissile fuel is present, some may be absorbed and cause more fissions. Thus, the cycle repeats to give a reaction that is self-sustaining. Nuclear power plants operate by precisely controlling the rate at which nuclear reactions occur, and that control is maintained through the use of several redundant layers of safety measures. Moreover, the materials in a nuclear reactor core and the uranium enrichment level make a nuclear explosion impossible, even if all safety measures failed. On the other hand, nuclear weapons are specifically engineered to produce a reaction that is so fast and intense it cannot be controlled after it has started. When properly designed, this uncontrolled reaction can lead to an explosive energy release
What does uranium decompose to after billions of years?
u are stupid
What Metal used in nuclear reactions?
Nuclear energy appears as heat in a nuclear reactor. It comes from the fission of uranium or plutonium
What are the elements produced by a fission reaction?
1. Fission products (lighter elements) 2. Energy from the loss of mass, appears initially as kinetic energy which is absorbed in the fuel bulk and transformed to thermal energy (heat) 3. Free neutrons-average 2.5 per fission 4. Gamma radiation
Who was the lead singer with The Supremes and later sang ' Chain Reaction'?
Diana Ross
Can a nuclear reaction naturally stop?
Yes. How quickly depends on available material. In a nuclear reactor, neutrons bombard uranium atoms, destabilising the nucleus. The unstable nucleus splits into two smaller nuclei. Smaller nuclei contain proportionally less neutrons and the spare neutrons are ejected. These are available for further bombardment, but usually require slowing down (moderating) before a good chance of a chain reaction occurs. For a chain reaction there needs to be sufficient fissile material (the uranium) and sufficient thermal (quite slow) neutrons. A lack of these will lead to the chain reaction coming to a halt.
What type of particle is captured by a nucleus during a fission reaction?
The nucleus splits to form two or more smaller nuclei.
