neutron economy उदाहरण वाक्य

उदाहरण वाक्य

1. These materials also have good neutron economy, allowing the pitch-to-diameter ratio to be large, which allows for improved natural circulation and economics.
2. UF 4 is generally chosen over other salts because of the usefulness of the elements without isotope separation, better neutron economy and moderating efficiency, lower vapor pressure and better chemical stability.
3. The resulting extremely high neutron economy, he claims, will make it possible to maintain a self-sustaining reaction in fuel rods of pure, once the reactor has been started by enriched fuel.
4. Neutron economy is the balanced account, in a reactor, of the neutrons created and the neutrons lost through absorption by non-fuel elements, resonance absorption by fuel, and leakage while fast and thermal energy ranges.
5. Most BWR and PWR commercial reactors use uranium enriched to about 4 % U-235, and some commercial reactors with a high neutron economy do not require the fuel to be enriched at all ( that is, they can use natural uranium ).
6. An example of this process is the evolution of the Light Water Reactor, a very heavily moderated thermal design, into the Super Fast Reactor concept, using light water in an extremely low-density supercritical form to increase the neutron economy high enough to allow breeding.
7. Although the thermal neutron fission cross section ( ? f ) of the resulting is comparable to and, it has a much lower capture cross section ( ? ? ) than the latter two fissile isotopes, providing fewer non-fissile neutron absorptions and improved neutron economy.
8. Uranium-233 has been used as a fuel in several different reactor types, and is proposed as a fuel for several new designs fuel cycles which require the superior neutron economy of a fast reactor in order to breed plutonium, that is, to produce more fissile material than is consumed.
9. See, e . g ., Einsteinium, which is formed by the capture of 15 neutrons by U-238 ( which is the sort of thing that you'll only find in a very high neutron economy, of course like the inside of a bomb, or a particle accelerator ) .-- talk ) 04 : 41, 3 November 2009 ( UTC)
10. Use of the isotope 15 N ( which constitutes around 0.37 % of natural nitrogen ) is preferable because the predominant isotope, 14 N, has a not insignificant neutron absorption cross section which affects neutron economy and, in particular, it undergoes an ( n, p ) reaction which produces significant amounts of radioactive 14 C which would need to be carefully contained and sequestered during reprocessing or permanent storage.