Sentences with phrase «of nuclear fission reactors»

Replacement of the current thermal variety of nuclear fission reactors with nuclear fission fast reactors, which are 100 times more fuel efficient, can dramatically extend nuclear fuel reserves.

There are various types of nuclear fission reactors.

Not exact matches

Together, the new experimental and theoretical studies will give us a much better understanding of nuclear fission, which can help improve the performance and safety of nuclear reactors.

Most nuclear reactors use uranium fuel that has been «enriched» in uranium 235, an isotope of uranium that fissions readily.

Though control rods have stopped the uranium fission process that drives normal operation of a nuclear reactor, the byproducts of that continue to split and generate heat.

All but two of the 440 or so commercial nuclear reactors operating are thermal, and most of them — including the 103 U.S. power reactors — employ water both to slow neutrons and to carry fission - created heat to the associated electric generators.

I was very surprised to read in your editorial that nuclear fission reactors are accepted as one of the energy...

Funding for the nuclear R&D sector is much lower than many international competitors and negligible for research into future generations of fission reactors.»

Today's nuclear reactors do dramatically better by splitting uranium atoms through fission, but they still fail to extract more than 0.08 percent of their energy.

A short while later, the Europa mission came back to life, when it was linked with an experimental ion propulsion system powered by a nuclear fission reactor, the pet idea of Sean O'Keefe, then NASA's administrator.

I was very surprised to read in your editorial that nuclear fission reactors are accepted as one of the energy providers that should feature in the UK's energy generation portfolio (9 November, p 3).

Such nuclear reactors can actually «consume» plutonium via fission (transforming it into other forms of nuclear waste that are not as useful for weapons).

A nuclear reactor derives power from the fission of four different atomic nuclei: uranium - 235, uranium - 238, plutonium - 239, and plutonium - 241.

Antineutrinos are a by - product of the fission in a nuclear reactor, in which an atomic nucleus of a radioactive element such as plutonium splits into lighter elements.

American researchers have shown that prospective magnetic fusion power systems would pose a much lower risk of being used for the production of weapon — usable materials than nuclear fission reactors and their associated fuel cycle.

The last time NASA tested a fission reactor was during the 1960s» Systems for Nuclear Auxiliary Power, or SNAP, program, which developed two types of nuclear power sNuclear Auxiliary Power, or SNAP, program, which developed two types of nuclear power snuclear power systems.

In addition we have provided training on a broad range of topics including introduction to nuclear fission, types of reactors, radiation protection, safeguards, regulations and nuclear safety culture.

Natural nuclear fission reactors may provide reasonable explanations for other «NASA mysteries» including: (1) Our Moon having a soft or molten core; (2) Tiny planet Mercury having a magnetic field; (3) Mars displaying evidence of an ancient magnetic field; (4) Our Moon displaying evidence of an ancient magnetic field; (5) Jupiter's moon Ganymede having an internally generated magnetic field; (6) Jupiter's moon Io being extremely volcanic; (7) Saturn's moon Enceladus showing evidence of internal heating; and, (8) Evidence of internal heat generation in Pluto's moon Charon:

He leads the Fuel Material and Chemistry Focus Area of the Consortium for Advanced Simulation of Light Water Reactors, a DOE Energy Innovation Hub, as well as Scientific Discovery through Advanced Computing (SciDAC) projects on plasma surface interactions and fission gas behavior in nuclear fuel.

Dubbed the compact fusion reactor (CFR), the device is conceptually safer, cleaner and more powerful than much larger, current nuclear systems that rely on fission, the process of splitting atoms to release energy.

Consortium run nuclear sites also oversee the production of plutonium pits, monitor the aging of nuclear weapons, manage the production of critical nuclear components like Tritium — which helps boost the yield in all nuclear weapons and initiate the fission stage in hydrogen bombs — and operate test reactors.

The waste for almost all fission reactors (with the exception of bad actors in the US, USSR, and UK nuclear weapons programs) is and was in the past almost entirely sequestered from the environment.

Karl Schroeder: The discontents of nuclear fission don't stem from the reactors (Chernobyl aside) but from the mining, refining and waste disposal processes, which are horribly polluting.

While nuclear energy is regarded as the lesser of the two evils when compared at an emission level to the burning of fossil - fuels, it may trump on the containment of the heat process, which burns in a contained nuclear reactor through an in - ward heat - chemical reaction called fission, but nuclear energy production is a chain from uranium mining to the toxic waste disposal and therefore as an entire process is an equally high risk environmental option.

Thus it makes pragmatic sense to me to focus our attention on a medium term adaption policy, whilst investing heavily in cleaner cheap sources of baseload energy, such as thorium fission and gen4 fission reactors and, in the slightly longer term, nuclear fusion reactors.

Nuclear fission, as you all know better than I, as a long term alternative to fossil fuels, depends on development and wide use of nuclear breeder reactors with concomitant problems of proliferation of atomic weapons matNuclear fission, as you all know better than I, as a long term alternative to fossil fuels, depends on development and wide use of nuclear breeder reactors with concomitant problems of proliferation of atomic weapons matnuclear breeder reactors with concomitant problems of proliferation of atomic weapons materials.

«Iodine - 129 (129I; half - life 15.7 million years) is a product of cosmic ray spallation on various isotopes of xenon in the atmosphere, in cosmic ray muon interaction with tellurium - 130, and also uranium and plutonium fission, both in subsurface rocks and nuclear reactors.

NUCLEAR ENERGY Heat energy produced by the process of nuclear fission within a nuclear rNUCLEAR ENERGY Heat energy produced by the process of nuclear fission within a nuclear rnuclear fission within a nuclear rnuclear reactor.

The fluoride salt thorium reactor can produce nuclear wastes that consist only of fission products, which quickly decay to stable elements - in fact some elements like xenon or rhodium represent valuable commercial products after a few months «cooling down».