When U 239 emits a beta particle The nucleus left behind has?
U-239 quickly emits a beta particle to become neptunium-239. Np-239 in turn emits a beta particle to become plutonium-239, which is relatively stable. Some Pu-239 nuclei may capture a neutron to become Pu-240, which is less stable. By further neutron capture, some Pu-240 nuclei may in turn form Pu-241.
When U 235 undergoes fission The total number of protons in the fragments is?
fission. When U-235 undergoes fission, the total number of protons in the fragments is: 90.
What does a breeder reactor breed quizlet?
oxidized. What does a breeder reactor “breed?” fissionable isotopes from a non-fissionable isotopes. Relative to a fossil-fuel plant, a nuclear power plant produces.
In which of these processes is an element of matter changed into a completely different element?
Nuclear transmutation is the conversion of one chemical element or an isotope into another chemical element. Nuclear transmutation occurs in any process where the number of protons or neutrons in the nucleus of an atom is changed.
When U-238 emits an alpha particle The resulting nucleus has?
Uranium-238 undergoes alpha decay to become thorium-234. (The numbers following the chemical names refer to the number of protons plus neutrons.) In this reaction, uranium-238 loses two protons and two neutrons to become the element thorium-234.
What are the products of the fission of U-235?
For fission of uranium-235, the predominant radioactive fission products include isotopes of iodine, caesium, strontium, xenon and barium.
What are the fission fragments of uranium-235?
A common pair of fragments from uranium-235 fission is xenon and strontium: Highly radioactive, the xenon decays with a half-life of 14 seconds and finally produces the stable isotope cerium-140. Strontium-94 decays with a half-life of 75 seconds, finally producing the stable isotope zirconium-94.
What does a breeder reactor breed?
Fast breeder reactor (FBR) which use fast (i.e.: unmoderated) neutrons to breed fissile plutonium and possibly higher transuranics from fertile uranium-238. The fast spectrum is flexible enough that it can also breed fissile uranium-233 from thorium, if desired.
What is the difference between a conventional nuclear reactor and a breeder reactor quizlet?
Conventional reactors use uranium as fuel and produce some plutonium. Breeders produce much more plutonium, which can be separated and reused as fuel.
Can nuclear fusion create gold?
Adding or removing protons from a nucleus are types of nuclear reactions. As such, no series of chemical reactions can ever create gold.
When U-235 undergoes fission the two nuclei that result have a total of?
In the nucleus of each atom of uranium-235 (U-235) are 92 protons and 143 neutrons, for a total of 235. The arrangement of particles within uranium-235 is somewhat unstable and the nucleus can disintegrate if it is excited by an outside source.
Why is it advantageous to produce plutonium-239?
The most important is plutonium-239 because it is fissionable, has a relatively long half-life (24,110 years), and can be readily produced in large quantities in breeder reactors by neutron irradiation of plentiful but nonfissile uranium-238.
What is the end product of the decay of Uranium-238?
The series of decay products created to reach this balance is called the decay chain. For example, the decay chain that begins with Uranium-238 culminates in Lead-206, after forming intermediates such as Uranium-234, Thorium-230, Radium-226, and Radon-222. Also called the “decay series.”.
How much energy is released in nuclear fission of U-235?
The energy released by fission of one `U^(235)` atom is 200 MeV.
What can fission of U-235 produce?
During fission, U-235 atoms absorb loose neutrons. This causes U-235 to become unstable and split into two light atoms called fission products.
When uranium-235 break up it produces?
When uranium-235 is reacted by irradiation with neutrons, the uranium atoms split, releasing more neutrons, heat, and atoms with smaller atomic numbers. This process is called fission, and the heat produced can be harnessed to create electricity, similar to conventional fossil fuel power plants.