Svensk översättning av 'fission reaction' - engelskt-svenskt lexikon med många fler översättningar från engelska till svenska gratis online.

A Fission Reactor is a multiblock structure that generates massive amounts of heat but does not produce power on its own. How much heat is generated depends on the rate at which it burns Fissile Fuel.

Nuclear Fission Chain Reaction: In each event of fission reaction with heavy nuclei, the highly excited nuclei emit two or more prompt neutrons. These neutrons interact with the neighbouring nuclei and produce in turn fissions, so that more neutrons are emitted. The result is an avalanche like build up of fission … In a fission reaction, an atom splits into 2 or more lighter and smaller atoms. Many highly radioactive particles are produced during a fission reaction. A fusion reaction occurs when two or more lighter, smaller atoms fuse together creating a heavier and larger atom. An extremely complex nuclear reaction representing a cataclysmic division of an atomic nucleus into two nuclei of comparable mass. This rearrangement or division of a heavy nucleus may take place naturally (spontaneous fission) or under bombardment with neutrons, charged particles, gamma rays, or other carriers of energy (induced fission).

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If a quantity of carbon is to most processes, but fission and other nuclear reactions defy these separate laws. Another very relevant reaction mechanism is neutron capture. → for heavy nuclei, addition of one more neutron can provide several MeV from binding energy. 1 Jul 2017 The direct photogeneration of triplet states was on the time scale of <1 ps, indicating that the underlying reaction mechanism was singlet fission (  22. Which type of reaction produces energy and intensely radioactive waste products?

Substantiv. Vanligast fysik. fission. Visa bild. a nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy 

/Cont'd. (a) Describe what happens during a neutron-induced fission reaction, explaining the radioactivity of the fragments and why neutrons are emitted. [30]. Fission, chain reaction, production of nuclear fuel (La 3.7, 3.5, 4.1-4.2, 4.7).

Fission and fusion are nuclear reactions that produce a vast amount of energy by different mechanisms. Nuclear fusion occurs when two atoms are fused together. To do this,

The gamma rays are well attenuated by high-density and high Z materials . In a reactor core the largest share of the energy will be deposited in the fuel containing uranium dioxide, but a significant share of the energy will be deposited also in the fuel cladding and in the coolant ( moderator ). So if you change reactivity, then ultimately that will result in a change in the fission reaction rate. But practically, the operators control the reaction rate with engineered methods (control rods), and that is set by regulatory concerns. So if you change the moderator temperature, you will change the reaction rate.

(Previously part of the Nuclear Physics simulation - now there are separate Alpha Decay and Nuclear Fission sims.) nuclear weapon: A weapon that derives its energy from the nuclear reactions of either fission or fusion. fusion: A nuclear reaction in which nuclei combine to form more massive nuclei with the concomitant release of energy and often neutrons. fission: The process of splitting the nucleus of an atom into smaller particles; nuclear fission. Even in H-bombs, the primary explosion needed to generate the energy that helps kick-start the fusion process is caused by a fission reaction, which later causes a secondary explosion, which is triggered by the fusion of the hydrogen isotopes. North Korea Successfully Tests Fusion-Powered Weapon Stimulated fission (also known as induced fission) affords the opportunity to establish and control a fission chain reaction. A discussion of this, and its industrial use, forms the focus of the subsequent chapters of this text.
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The majority of the fission energy, around 80%, is carried away as kinetic energy and excitation energy of the fission fragments. Denne type af fission, kaldet spontan fission er sjælden, undtagen i nogle få tunge isotoper. I teknisk frembragte kerne-aggregater sker stort set al kerne-fission som kerne-reaktion - en bombardements drevet proces - hvor en subatomar partikel kolliderer med en atomkerne og fremkalder ændringer i den.

It can also be the foundation of powerful weapons that create mass casualties. The atomic bombs, which start with the same fission reaction, that were dropped in Japan killed up to 226,000 people over a 4-month period. About half of those deaths occurred on the same day.
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The resulting fission process often releases additional neutrons, which can go on to initiate other 235 U atoms, forming a chain reaction. While nuclear fission can occur without this neutron bombardment, in what would be termed spontaneous fission, this is a rare occurrence; most fission reactions, especially those utilized for energy and weaponry, occur via neutron bombardment.

Fission af en tung atomkerne kan foregå spontant (altså af sig selv, med en karakteristisk halveringstid) eller den kan sættes i gang f.eks. ved at beskyde atomkernen med neutroner. Når en kerne fissionerer frigøres der som regel 2 eller 3 neutroner, der kan inducere fission i en ny kerne. Der kan derfor starte en kædereaktion. c) Know that for fission to occur the uranium-235 or plutonium-239 nucleus must first absorb a neutron.