Sentences with phrase «of uranium atoms»

The team from PNNL, University of Chicago, and SSRL made their discovery by combining X-ray scattering and spectroscopy experiments to determine the positions of the uranium atoms.

They space themselves within the layers and alter the structure by causing the layers of uranium atoms above and below to draw closer to the oxygen.

The water contains a smattering of uranium atoms that decay into a distinctive isotope of thorium, which accumulates in the calcite over millennia.

Every time an incoming neutron bombards one of the uranium atoms, the atom splits in two, expelling energy and releasing more neutrons, which in turn collide with other atoms and establish a chain reaction.

Not exact matches

The nuclear power plants in use around the world today use fission, or the splitting of heavy atoms such as uranium, to release energy for electricity.

there's really no room for the concept of an independent entity possessed of «will» in a worldview shaped by cause and effect; the only place for «will» to retreat to is the zone of true randomness, of complete uncertainty, which means that truly free will as such must be completely inscrutible [sic]... Statistical laws govern the decay of a block of uranium, but whether or not this atom of uranium chooses to fission in this instant is a completely unpredictable event — fundamentally unpredictable, something which simply can not be known — which is equally good evidence for the proposition that it's God's (or the atom's) will whether it splits or remains whole, as for the proposition that it's random chance.

Still again, an atom of uranium decays into an atom of lead — when?

To address this problem, the research team prepared a new family of molecules with C = M = C cores where the metal was cerium [classed as a lanthanide] or thorium or uranium [which are classed as actinides] where two carbon atoms that are known to be strong donors were forced to be opposite to one another either side of the metal.»

A good example of this is the uranyl, -LCB- UO2 -RCB- 2 + ion which is widely prevalent in the environment naturally and also nuclear waste where the two oxygen atoms reside opposite each other and are bonded very strongly to the uranium.

Since neutrons traveling through heavy water split atoms more efficiently, less uranium should be needed to achieve a critical mass; that's the minimum amount of uranium required to start a spontaneous chain reaction of atoms splitting in rapid succession.

The competing SFR design banks on a novel fission concept: bombarding uranium atoms with neutrons of much higher energy than those used in a traditional nuclear plant.

When bombarding uranium with neutrons, Hahn had made some surprising observations that went against everything known at the time about the dense cores of atoms — their nuclei.

What is more, the uranium atoms that have already split in two produce radioactive by - products that themselves give off a great deal of heat.

Splitting a uranium atom converts only about 0.1 percent of its mass into energy, but mixing matter and antimatter is 100 percent efficient.

All reactors produce energy by splitting the nuclei of heavymetal (high - atomic - weight) atoms, mainly uranium or elements derived from uranium.

Reactors around the world require their fuel to hold anywhere from 3 to 5 percent U235, or 30 to 50 atoms of the fissile isotope per 1,000 atoms of uranium.

Such uranium deposits in Canada, Australia and Kazakhstan comprise the bulk of the world's known supply — although uranium is a ubiquitous atom that can even be derived from seawater.

When the clusters form, each contains 20 to 60 uranium atoms, «so we can extract them in whole bunches instead of one at a time,» Nyman said.

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.

Fusion is the opposite of fission, which frees energy when an atom like uranium splits into two smaller atomic nuclei.

Crewe's team was trying to image an atom of uranium, a large element with 238 protons and neutrons, number 92 on the periodic table.

Many members of the team had previously reported uranium nitride and oxo complexes where the molecules are essentially the same except for swapping a single nitrogen atom for an oxygen.

Hunting for the universe's heaviest atoms just got a little easier, thanks to a new technique that directly measures the mass of elements heavier than uranium.

The trap was used to weigh atoms of nobelium, an element that contains 102 protons, 10 more than uranium.

The clusters of lead atoms formed 1 billion years after crystallization of the zircon, by which time the radioactive decay of uranium had formed the lead atoms that then diffused into clusters during reheating.

After testing many alternatives, the chemists found an organic molecule that clamps down — like Pac - Man — on one of uranium dioxide's oxygen atoms.

This weakens uranium's grip on the other oxygen, the researchers report tomorrow in Nature, allowing it to react with one of the new molecule's silicon atoms.

The potassium - atom mouth of an organic molecule grabs one of the oxygen atoms (red) in uranium dioxide.

The number of events scientists detect relates directly to the number of atoms of uranium and thorium inside the Earth.

While visiting the production site for highly - enriched uranium in Oak Ridge, Tenn., during the 1940's, for example, Feynman was surprised to see stocks of that fissionable material deliberately stored in separate rooms, but on an adjoining wall that posed no barrier to collisions involving atoms of uranium and escaping neutrons on both sides.

Pacific Northwest National Laboratory scientists Dr. Sebastien Kerisit and Dr. Chongxuan Liu used molecular dynamics techniques and EMSL's Chinook supercomputer to calculate diffusion trajectories of uranium - containing species based on a set of equations describing the way atoms interact.

First one neutron splits one uranium atom which in the process of splitting releases 2 neutrons.

Nuclear power plants, however, heat the water using fission reactions, splitting atoms of uranium or plutonium and producing no carbon emissions.

Note well that solving for the exact, fully correlated nonlinear many electron wavefunction of the humble carbon atom — or the far more complex Uranium atom — is trivially simple (in computational terms) compared to the climate problem.

On the face of it looks far better than uranium as a way to get power from the atom.

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