Sentences with phrase «fusion reactions in»

In this activity students use E = mc2 to calculate the amount of energy released from nuclear fusion reactions in the Sun.

All stars, including our sun, will eventually run out of the hydrogen gas that fuels the nuclear fusion reactions in their cores.

On the other hand, «heavy» elements such as carbon and oxygen are synthesized by nuclear fusion reactions in stars.

Stellarators are fusion devices that use twisting, potato chip - shaped magnetic coils to confine the plasma that fuels fusion reactions in a three - dimensional and steady - state magnetic field.

The five - year grant will total some $ 2.5 million and fund exploration of the mechanisms that govern the formation and maintenance of the hot edge of fusion plasmas — the electrically charged gas that results in fusion reactions in facilities called tokamaks.

These devices heat the plasma to more than 150 million degrees Celsius, simulating the conditions that cause natural nuclear fusion reactions in stars.

originate from fusion reactions in the heart of stars and are spewed out when those stars explode as supernovae, the relatively high metallicity of the galaxy suggests that it had already seen the birth and death of generations of stars by the time the universe was 700 million years old.»

An American research team in January discovered a way to initiate nuclear fusion reactions in a process called «fast ignition» by using a high - intensity laser, according to the American Association for the Advancement of Science.

Scientists can already trigger limited fusion reactions in the lab and abundant (if somewhat uncontrolled) reactions in a hydrogen bomb.

Among the main ingredients is helium - 3 (He - 3), a vestige of the Big Bang and nuclear fusion reactions in stars.

Equally baffling is how those who say it certainly does do not believe that great fusion reaction in the sky can not.

Not exact matches

They would get more energy out of a fusion reaction than they put in by the summer of 2013.

The inertial confinement experts, such as those at NIF, are attempting to ignite a fusion reaction by firing powerful lasers at plasma contained in a pellet the size of a pea.

It is building on the concept of compressing fuel to heat it until it triggers a fusion reaction, an idea experimented with for years in large - scale government programs.

HiPER aims to use smaller lasers within an inertial confinement fusion device in the expectation that, once «lit,» the fusion reaction will spread on its own.

These conditions have never been created in a laboratory environment and exist naturally only during thermonuclear burn, in supernovae and in the fusion reactions that power our stars.

Human male sperm and human female eggs are an - alogous to the millions of tons of inactive deuterium floating harmlessly in the ocean but combine them in a fusion reaction, they instantly become the expanding energy of the Sun found in all stars as they continuously fuse more hydrogen making the const - ituents of all human life..

This «quarksplosion» would be an even more powerful subatomic analog of the individual nuclear fusion reactions that take place in the cores of hydrogen bombs.

For instance, they were involved in debunking cold fusion in 1991, which was a hypothetical nuclear reaction that could occur around room temperature.

Thus, synaptobrevin 2 may function in catalyzing fusion reactions and stabilizing fusion intermediates but is not absolutely required for synaptic fusion.

Hot plasma in fusion reactions bites pieces from the reactor walls, creating metallic dust.

In addition to outlining their findings in the journal Nature, they also released graphs, photos, videos, and their complete raw data showing the telltale production of neutrons, a signature of a fusion reactioIn addition to outlining their findings in the journal Nature, they also released graphs, photos, videos, and their complete raw data showing the telltale production of neutrons, a signature of a fusion reactioin the journal Nature, they also released graphs, photos, videos, and their complete raw data showing the telltale production of neutrons, a signature of a fusion reaction.

The hot fusion folk who criticised cold fusion got one thing right: if it were a pairwise reaction of only two deuterium nuclei, like in free space, you should always see the same products as in hot fusion.

The new capability, developed by physicist Mario Podestà at the U.S. Department of Energy's (DOE) Princeton Plasma Physics Laboratory (PPPL), outfits the code known as TRANSP with a subprogram that simulates the motion that leads to the loss of energetic ions caused by instabilities in the plasma that fuels fusion reactions.

In early 2017, Iran is expected to join the world's most expensive physics experiment, ITER, which aims to achieve the first controlled, self - sustaining fusion reaction within a decade or two.

If enough material, mostly in the form of hydrogen gas, accumulates on the surface of the white dwarf, nuclear fusion reactions can occur and intensify, culminating into a cosmic - sized hydrogen bomb blast.

Could these conditions initiate or facilitate nuclear fusion, as suggested in the recent movie «Chain Reaction»?

However, the reaction also produces high - energy neutrons, which would damage whatever vessel the fusion reactor is in and render anything around them radioactive.

When the head of the Atomic Energy Commission at the time, Lewis Strauss, infamously quipped in 1954 that electricity would become «too cheap to meter,» he was likely referring to nuclear fusion, not nuclear fission, the atom - splitting reaction that powers conventional nuclear power plants today.

In a fusion reaction, you want to get one deuterium to stick to one tritium, forming a helium nucleus of two protons and two neutrons.

The goal of fusion physicists is to use the heat from a fusing plasma to keep the reaction going indefinitely, without the need to pump in external energy.

In a basic fusion reaction, hydrogen atoms collide, creating helium and releasing energy.

A 10-fold increase in temperature would bring them into the realm of sparking reactions in conventional fusion fuel, a mixture of the hydrogen isotopes deuterium and tritium, known as D - T.

It now eats up a million times more energy than it makes, but Bailey is optimistic — as fusion researchers always are — that an upgraded reactor, scheduled for completion in 2006, might within a decade permit reactions that produce more energy than they absorb.

NIF officials say that they are closing in on achieving «ignition» — a self - sustaining fusion reaction that generates at least as much energy as it consumes.

But other, cheaper approaches exist — and one of them may have a chance to be the first to reach «break - even,» a key milestone in which a process produces more energy than needed to trigger the fusion reaction.

The breakthrough is in magnetic confinement fusion, in which hydrogen is heated until it is a plasma 10 times hotter than the centre of the sun, and held in place by strong magnetic fields until fusion reactions occur.

However, plasma this hot is extremely turbulent and can behave in surprising ways that baffle scientists, at times becoming unstable, and dissipating before any fusion reactions can take place.

According to standard models of stellar evolution, around that time the sun will largely deplete the hydrogen reserves in its core and begin to balloon as its fusion reactions migrate outward.

Although they are as common as stars and form in much the same way, brown dwarfs lack the mass necessary to sustain nuclear fusion reactions.

CHICAGO, ILLINOIS — This week, the National Ignition Facility (NIF) at Lawrence Livermore National Laboratory in California announced an important milestone on the road to achieving ignition, which could lead to producing controlled fusion reactions here on Earth.

The ability to accurately determine the rate of this H - 17O fusion reaction provides nuclear physicists with another key puzzle piece, alongside direct observations of oxygen elemental and isotopic abundances in stellar atmospheres and in primitive meteorites, to zero in on complete and accurate models of stars.

«The next step in power reactor performance levels, at which the plasma is capable of ignition and plasma «burn» (wherein most of the heating energy comes from the fusion reactions), again requires a new, more powerful experimental device.

Moyer: So, the energy in a fusion reaction is mostly in the form of neutrons.

They believe that the experiments, in which laser beams power a fusion reaction, could reveal secrets of the hydrogen bomb.

And finally there was the follow - up study (not yet subjected to peer review) by another team at Oak Ridge that claimed that the evidence of fusion reactions disappeared when it repeated the experiment with different sensors and analyzed the data in a different way.

You have those, you kind of solve a lot of the blanket problems where you have your fusion blast in the center and then it hits a blanket which is basically nuclear waste, depleted waste, and there's a lot of left over energy in that waste; and you have neutrons hit that waste and then that catalyzes further reactions, you get a lot more heat.

We're kind of getting this, in addition to NIF, there's this other program called, ITER, which is out in Europe, which will also be able to create controlled fusion reactions at above break - even that's going to be going online in maybe 15 years or so; they're building it right now.

In the meantime, however, the exposed core becomes a violent scene of fusion reactions among remaining hydrogen and helium nuclei, which release a torrent of energetic photons, mostly in the form of ultraviolet rayIn the meantime, however, the exposed core becomes a violent scene of fusion reactions among remaining hydrogen and helium nuclei, which release a torrent of energetic photons, mostly in the form of ultraviolet rayin the form of ultraviolet rays.

What's more, the helium nuclei generated during the experimental runs are colliding with fuel in the pellet, sparking further fusion reactions.