Added: 4 years ago
From: stephendonnelly88
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  • @deosu actually, if u stuck a human in a reactor not much would happen at all. The plasma would rapidly loose energy. You must remember that this plasma is not very dense. But saying that, I wouldn't like to demonstrate it :D

  • @spritsengiggle and the part about lasers, you're thinking of inertia confinement fusion which is completely different to this (which is magnetic confinement fusion).

  • @spritsengiggle @trexilll trexilll is right about the fact that it requires more energy than it generates. And yes, this is because of confinement. There are instability modes within the plasma that need controlling. The longer the confinement, the more energy can be produced. There are MANY other problems with Tokamaks, we can only sustain reactors for ~20-30 years with the worlds current supply of tritium. one of the main goals is to design tritium breeders (that will generate tritium)

  • i cant wait to see JET

  • That looks really expensive.

  • SandustanBrasov

    The test for nuclear fusion realisation on Tokamak's installations and with LASER cannot bring anything new for the energetics' future. I bind the thermonuclear controlled reactor schedule by the Sun model , by the reactive electromagnetic motor schedule from Palenque stone's tombe. You see the my project for thermonuclear controlled reactor.

  • SandustanBrasovMy brethren, you have capacity of to construct the thermonuclear controlled reactor, only that, you must needs let construct something functional. The tokamak were invented in 1950s by physicists Igor Tamm and Andrei Sakharov inspired by idea of Oleg Lavrentyev, when he studyed the realization of the hydrogen bomb, which has not need of magnetic trap, and thus, all the experiments were finished with the destruction of the tokamak instalations in the central

  • The set of Terminator 3?

  • the temp inside your inkljet printer hits levels as hot as plasma, but only for a micro sec, ... just thought you should all know that lol

  • So when will we be able to travel at the speed of light with an engine, like this one, powering a gigantic ship? I know....wishful thinking.

  • what would happen if a human was put in there during a test run ?

  • @wyvern499 wtf do you think...

  • by the time they get tokamaks to break even (most estimates say 2070) there will be better alternitives that are fully developed, like the polywell.

  • Amazing!

  • It is indeed magnets that hold the plasma in place, but its very complicated. A current is run trough the plasma itself, so that it becomes magnetic (charged particles need to move if they are to be magnetic) and lots of strong magnets hold that moving plasma inside the donut while its moving around. If I remember correct, they are trying to let enough of the released neutrons interact with the walls in such a way that they produce more fuel... complicated stuff.

  • stay away from the plasma its hotter than the surface of the sun

  • nice

  • tritium seems not good, it isn't inexistent in nature because its half life is only 12 years and the reaction produces neutrons impossible to stop, and is inefficient. USA, Rusia, China, EU and Japan are researching the helium3 or He3, that is only on the moon, cause magnetic field on earth repels it. There are 1 million tons, is clean energy for 4000 years and they're mad with it, cause 1kg of he3 is valued in 4million US$, so is sure we can't fill globes with this type of helium

  • Kind of right. Tritium is rare because of, as you say, it decays relatively fast, and so isnt found it nature (we can recover it from nuclear reactors as a 'waste' product), however it is not repelled by the earths magnetic field. You are probably thinking of a alpha radiation which is a helium nuclei stripped of its electrons, and it is affected by EM fields as it travels.

    It exists in many places other than moon. It exists on other planets, asteroids, comets, etc and especially in stars.

  • That's true! You must've seen that show too. 1 ton of He3 can power a city of 10 million for a year.

  • Outstanding!

  • Will this technology work or not? Are the powers that be really efforting at this technology? What's the largest difficulty to overcome at present? Is the scale of iter too small?

  • its costing more energy to produce the reaction than we can extract from the reaction. Its all about containing the plasma as the reaction grows, this is where our technology needs improvement.

    Until you get more out of it than you put in, it's not economical.

  • @trexilll may i remind you that this is still a work in proces and the future of this are looking better and better. even with the contruction of the this new power plant they are making new things adding new things, so give it time. i like the idea anyway.

  • @trexilll The reaction itself will produce waaaayyy more energy than you put in, so you are wrong. But as you say, containing it is a problem. Solving this riddle is like finding a needle in a haystack. They are trying to create an artificial sun, not a piece of cake.. There is no reaction. not yet. they are starting to use lasers now, that might work.

  • @spritsengiggle You said I was wrong then agreed with me. I'm more than a little confused.

  • @trexilll Once you start the reaction and maintain it without outside energy(break even) then you hit pay dirt.

    In theory, once you get the reaction started inside the reactor, it should keep running as long as you feed it fuel...... This is the main problem we face, along with keeping it contained in a extremely hot environment.

  • 80 million degrees!!, that's hot.

  • Well drrrrrrr!

  • @AZURA888 Boltzman's constant is 8.6*10^-5 eV/K. 80 million degrees is just 7keV, or the energy an ion has if you accelerate it across a 7 000 volt drop in vacuum. The protons in the large hadron collider are 80 quadrillion degrees; but there are much fewer ions in those beams than there are in these fusion reactors.

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  • This makes me think, "Uhhh, everything's fine here. Situation normal. We're fine. We're all fine here now, thank you. How are you?"

  • That was Jan Solo ;)

  • Okay here's an even more insane question. Considering the amount of heat energy it would take to turn gas into plasma, what do you suppose is the temperature and energy required to turn an entire human into plasma?

  • .....how 'bout "really, really, really hot!" :-D

    (I really have no clue)

  • duuhh. Plasma's the most common state of matter in the Universe. Therefore people, trees, goats, grasses, cinch bugs, are all freaks of nature.

  • lol becuase of Stars are so dam big.

  • Thanks for the comment. Still can't figure out what you mean. ...Ahh..I like the video that graphically compares solar masses "all lined up" with their names. Never would have figured it. ..?.. ahh...There was a news story about a "diamond star". A solar mass of crystallized carbon. I guess it's true.

  • "Plasma's the most common state of matter in the Universe" Stars? Plasma becuase there so hot right?

  • uuhh...Yea... The reality of plasma must have something to do with gravity. If gravity were all powerful, everything would tend to collapse into a lump. ...so the energy and state of a star is relative to the amount of matter in it to the force of gravity. eh hem... so a gas giant planet doesn't have enough matter to spark fusion. Do all stars have planets? What allowed the planets to form at all?

  • @Deosu you can't just turn a human into plasma I guess, since he's nod made of a single element that could go gas....He'd first burn (C -> CO & CO2)

  • @Deosu Hmm Champion of the sun? :D

  • @Deosu the same temperature as anything else several hundred a few thousand

    no where near as hot as that reactor

  • @Deosu I think you can chose between ionizing it using elecricity and heating it up =)

  • @Deosu put it this way ITER burns at 100 million kelvin it needs magnets to contain the heat because ANYTHING that came into contact with it would be turned into plasma as well 100 million kelvin is hotter than the corona of the sun by about 50 times

  • @Deosu it probably would be more about how long they are in there, though it would probably need a bit more heat

  • @Deosu 100 000 Kelvin, coulombs law + bolzmann constant

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  • Good question. I can't claim to be any sort of expert on this incredible piece of technology, so all I can say is "I dunno".

    I should research this, though. :-)

  • @stephendonnelly88

    They use electromagnectic forces to contain the plasma without touching the torus wall

  • you gave the answer yourself.... magnetic force

  • The same reason the electron beam in a CRT can be hotter than the center of the sun without melting your screen.

  • Magnetic fields are keeping the plasma away from the walls.

  • @panzarw magnetic field keeps the plasma confined, so the only heat transfer is by radiation, which is probably limited because the stuff is so shiny

  • @panzarw there is vacuum inside of it so that there is no air to heat up the walls of the reactor but the light and the helium come off of the reactor and heat up the metal.

    i think P:

  • @panzarw plasma is, simply put, ionized gas molecules. that means tht their are a huge amount of protons electrons etc withing the plasma. The magnets are able to repel the plasma away from the walls because the ions are oppositely charged to the charge of the magnets. Heat is basically the amount in which a particle vibrates releasing energy. If you prevent the particle from touching the walls of the reactor then it cannot transfer its energy to the reactor walls.

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  • @panzarw That magnet force is stronger than you think.

  • @panzarw "heat" is brownian motion, if the plase doesnt touch the walls, the walls dont get hot!

  • @panzarw if you had looked into it then you should know that the most head stay's within the magnet field and dont come in contact with the walls btw those walls are also made to resist high temp's. and this is much saver then nuclear powerplants becuase to proces stops direct after an error the temp has to stay on a constant ****c if its getting to high or to low then there is no reaction possible.

  • @panzarw Although the plasma is very hot, it is not very dense. There are many times more atoms in the wall than there are in the plasma, and the plasma is kept away from the wall by a magnetic field. The few ions that hit the wall cause a little bit of local damage but not significant bulk heating of the wall. Think of them sort of like alpha particles from a radioactive isotopes(but with much less energy!)

  • @panzarw magnetic filed ...thats what holds it from touching the walls

  • That would be cool to live in.. maybe.

    looks like something from the movies -- like a spaceship!

  • This is a fusion reactor. Living inside one (while operating) would be impossible. Temperatures inside this reactor reach sun-like levels. The temperature is so hot that it causes the atoms to move around so fast that they can no longer stay bonded together as molecules.

    As a result, the gas inside the reactor becomes completely ionized. Gas in this state is called "Plasma". As the temperatures get even hotter, the atoms will begin fusing with each other to form lightweight isotopes of Helium.

  • This entire process releases a tremendous sum of energy, which can then be used (in theory) for industrial purposes.

  • Well it would be a fun place to have a PaintBall fight -- of course, while it's turned off..

    Last one to the door get's locked in -- and evaporates.

    where is this reactor?

  • I believe this reactor to be located at the Institute For Energy Research in Germany.

    And yes, I do suppose that the inside of the reactor does have a somewhat "space-age" appearence. Playing paintball inside of the reactor would not be very fun though, since the reactor is just a giant circle.. ;-D

  • TEXTOR ? what about tokamak ?

  • The TEXTOR reactor is simply a varient of the original tokamak design.

  • Nice.

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