Preventing Terror in the Skies Harry Martz Key Words: automated threat-detection algorithm, aviation security, explosives detection, linear attenuation coefficient, Transportation Security Administration, x-ray computed tomography CT. Research Highlights. Diamonds Put the Pressure on Materials William Evans Key Words: compression rate, crystal growth, dynamic diamond anvil cell dDAC , high-pressure experiment, material dynamics, moissanite anvil cell MAC , phase transformation kinetics, static experiment, superhard material.
The Hunt for Better Radiation Detection Steve Payne Key Words: crystal growth, gamma radiation, garnet, helium-3, lanthanum bromide cerium , neutron, radiation detection, scintillation detector, stilbene, strontium iodide, transparent ceramics. Too Close for Comfort David S.
Beware email scams!
Dearborn Key Words: asteroid, deflection, fragmentation, gravity tractor, impactor technology, Spaceguard Near-Earth Object Survey, nuclear explosive, space. Feature Article. Herbert F.
Energy Goes with the Flow A. Simon Key Words: carbon dioxide emissions, energy consumption, energy flow charts, energy flow diagrams, energy resources. The Radiant Side of Sound Evan Reed Key Words: acoustic wave, piezoelectric material, ramp compression, shock wave, semiconductor, sound wave, strain, terahertz frequency, ultrafast laser. Mass-Producing Positrons Hui Chen Key Words: antimatter, astrophysics, gamma ray, high- Z material, hot electron, plasma, positron, positronium, Titan, ultraintense laser. Smoothing Out Defects for Extreme Ultraviolet Lithography Paul Mirkarimi Key Words: deposition, etching, extreme ultraviolet lithography EUVL , integrated circuit, ion-beam thin-film planarization process, mask defect, microchip, reflective multilayer, semiconductor industry, transistor.
Molecular Building Blocks Made of Diamonds Trevor Willey Key Words: adamantane, band gap, conduction band, diamond, diamondoid, monolayer, semiconductor. December Featured Articles. A Calculated Journey to the Center of the Earth Jeff Roberts Key Words: Advanced Light Source, core formation, iron sulfide, magma ocean, mantle, olivine, partial melt, percolation, permeability, volcanic glass, x-ray computed tomography.
Power to the People Stephen B. November Featured Articles. Probing Deep into the Nucleus Stephen B. Libby Key Words: Edward Teller, nuclear physics, particle physics, standard model. October Featured Articles.
- Global race for transformative molten salt nuclear includes Bill Gates and China;
- The Liquid Fluoride Thorium Paradigm!
- A Review of Carbon Nanomaterials’ Synthesis via the Chemical Vapor Deposition (CVD) Method?
- Angewandte Physikalische Chemie!
- New Nuclear?
- How to Read a Latin Poem: If You Cant Read Latin Yet.
- Dynamics of Spatio-Temporal Cellular Structures: Henri Bénard Centenary Review.
Back to Basics Stephen B. Libby Key Words: atomic physics, Edward Teller, hydrogen molecular ion, Jahn—Teller theorem, molecular physics, polymolecules, Thomas—Fermi approximation, quantum mechanics. September Featured Articles. This benefit would come with the added expense of a larger fissile inventory or a 2-fluid design with a large quantity of blanket salt. The necessary fuel salt reprocessing technology has been demonstrated, but only at laboratory scale.
MSRs operate at low although above ambient pressure. In the event of a malfunction, this means that the risks of an explosion are low.
Most MSR designs employ passive cooling systems. This means that pumping is not required, removing pump failure risks. If temperature grows too high, the temperature melts a plug that otherwise keeps the molten salt inside the reactor allowing it to drain into an area that disperses the fuel and quenches fission. Reactor activity is negatively related to temperature. If the reactor gets too hot, fission slows, allowing temperature to cool. MSRs can be designed to produce a much smaller volume of much shorter-lived waste products, reducing problems associated with waste disposal and proliferation.
MSRs can be designed to burn convert to energy spent nuclear fuel and weapons-related materials and not produce nuclear materials with proliferation risks. MSRs can be sited underground such that in the event of a failure or at end-of-life, the operator can safely walk away from the unit. Reprocessing refers to the chemical separation of fissionable uranium and plutonium from spent fuel.
In the United States the regulatory regime has varied dramatically across administrations. In the Molten Salt Breeder Reactor proposal, uranium reprocessing was scheduled every ten days as part of reactor operation. This design is referred to as denatured molten salt reactor.
Why Renewables Can’t Save the Planet
MSRs, especially those with the fuel dissolved in the salt differ considerably from conventional reactors. Reactor core pressure can be low and the temperature much higher. In this respect an MSR is more similar to a liquid metal cooled reactor than to a conventional light water cooled reactor. MSRs are often planned as breeding reactors with a closed fuel cycle—as opposed to the once-through fuel currently used in U. Safety concepts rely on a negative temperature coefficient of reactivity and a large possible temperature rise to limit reactivity excursions.
As an additional method for shutdown, a separate, passively cooled container below the reactor can be included. In case of problems and for regular maintenance the fuel is drained from the reactor. This stops the nuclear reaction and acts as a second cooling system. Neutron-producing accelerators have been proposed for some super-safe subcritical experimental designs. Cost estimates from the s were slightly lower than for conventional light-water reactors. The temperatures of some proposed designs are high enough to produce process heat for hydrogen production or other chemical reactions.
MSRs offer many potential advantages over current light water reactors: .
Free Thought Lives
From Wikipedia, the free encyclopedia. This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. This article may be in need of reorganization to comply with Wikipedia's layout guidelines. Please help by editing the article to make improvements to the overall structure.
Damage tolerance of nuclear graphite at elevated temperatures
August Learn how and when to remove this template message. The examples and perspective in this article may not represent a worldwide view of the subject. You may improve this article , discuss the issue on the talk page , or create a new article , as appropriate. Main article: Aircraft Reactor Experiment. Main article: Molten-Salt Reactor Experiment. Thorium is not for tomorrow but unless you do any development, it will not get there.
Main article: Very high temperature reactor. Main article: Liquid fluoride thorium reactor. This section does not cite any sources. Please help improve this section by adding citations to reliable sources. September Learn how and when to remove this template message.
fluoride salts flinak: Topics by munchdacmehertho.tk
Nuclear technology portal Energy portal Physics portal. Aqueous homogeneous reactor Generation IV reactor Integral fast reactor Liquid fluoride thorium reactor Liquid metal cooled reactor Nuclear aircraft Nuclear power Nuclear waste Thorium fuel cycle. World Nuclear Association. Oak Ridge National Lab. Nuclear Science and Engineering. Retrieved 12 November The Technology pork barrel.
Brookings Institution. Retrieved 28 February The Alvin Weinberg Foundation. Archived from the original on 5 March Retrieved 13 June Advanced Reactors with Innovative Fuels. Retrieved 15 July Canadian Nuclear Safety Commission. Retrieved 10 November The Guardian. Weinberg Next Nuclear. Retrieved 9 June South China Morning Post.
Retrieved 4 May World Nuclear News. Archived from the original on 13 April Progress in Nuclear Energy.