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Thread: Nuclear Fusion Breakthrough at NIF BBC Reports

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    Re: Nuclear Fusion Breakthrough at NIF BBC Reports

    Quote Originally Posted by Sherman123 View Post
    Wasn't disputing her knowledge, was only asking her a question. It's not as though there aren't a lot of different viewpoints on the timeframes for this sort of thing. But now I'd doubly like to hear the answer.
    The fusion part is easy. The hard part is to contain the reaction, since there is no material on earth that can hold it without melting. We are dealing with temperatures that are typically found in the sun. Therefore, the plasma must be held inside an electromagnetic field, and there's the rub. It takes lots of energy to generate one. Once the reactions are efficient to the point where the output is greater than the combined energy of the lasers that generate the reaction and the field which holds it, then you are off to the races.

    NOTE to Sherman: I am not a her. I am a he, unless you think ladies have huge mustaches..... Wait, ladies DO have huge mustaches in Italy, but I'm not Italian.
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    Re: Nuclear Fusion Breakthrough at NIF BBC Reports

    Quote Originally Posted by danarhea View Post
    The fusion part is easy. The hard part is to contain the reaction, since there is no material on earth that can hold it without melting. We are dealing with temperatures that are typically found in the sun. Therefore, the plasma must be held inside an electromagnetic field, and there's the rub. It takes lots of energy to generate one. Once the reactions are efficient to the point where the output is greater than the combined energy of the lasers that generate the reaction and the field which holds it, then you are off to the races.

    NOTE to Sherman: I am not a her. I am a he, unless you think ladies have huge mustaches..... Wait, ladies DO have huge mustaches in Italy, but I'm not Italian.
    "He who does not think himself worth saving from poverty and ignorance by his own efforts, will hardly be thought worth the efforts of anybody else." -- Frederick Douglass, Self-Made Men (1872)
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    Re: Nuclear Fusion Breakthrough at NIF BBC Reports

    Quote Originally Posted by danarhea View Post
    The fusion part is easy. The hard part is to contain the reaction, since there is no material on earth that can hold it without melting. We are dealing with temperatures that are typically found in the sun. Therefore, the plasma must be held inside an electromagnetic field, and there's the rub. It takes lots of energy to generate one. Once the reactions are efficient to the point where the output is greater than the combined energy of the lasers that generate the reaction and the field which holds it, then you are off to the races.

    NOTE to Sherman: I am not a her. I am a he, unless you think ladies have huge mustaches..... Wait, ladies DO have huge mustaches in Italy, but I'm not Italian.
    Hehe, sorry.

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    Re: Nuclear Fusion Breakthrough at NIF BBC Reports

    Quote Originally Posted by danarhea View Post
    The fusion part is easy. The hard part is to contain the reaction, since there is no material on earth that can hold it without melting. We are dealing with temperatures that are typically found in the sun. Therefore, the plasma must be held inside an electromagnetic field, and there's the rub. It takes lots of energy to generate one. Once the reactions are efficient to the point where the output is greater than the combined energy of the lasers that generate the reaction and the field which holds it, then you are off to the races.

    NOTE to Sherman: I am not a her. I am a he, unless you think ladies have huge mustaches..... Wait, ladies DO have huge mustaches in Italy, but I'm not Italian.
    Actually if you wouldn't mind explaining what is the difference between this and full ignition?

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    Re: Nuclear Fusion Breakthrough at NIF BBC Reports

    I really think if we were to spend a fraction of the resources in developing a space based solar network, we wouldn't have to consume the oceans for power until the world's power consumption exceeded 155 TW of power.

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    Re: Nuclear Fusion Breakthrough at NIF BBC Reports

    Once again the British are late to the party. Ford has been selling the Fusion here for years. They even make a hybrid.












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    Re: Nuclear Fusion Breakthrough at NIF BBC Reports

    Quote Originally Posted by danarhea View Post
    A true tokamak, will be running efficiently within 10 years, and cheap fusion power will be available to the world within 20.
    That sounds absurdly optimistic to me. Got a link or something?

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    Re: Nuclear Fusion Breakthrough at NIF BBC Reports

    Quote Originally Posted by Sherman123 View Post
    Actually if you wouldn't mind explaining what is the difference between this and full ignition?
    The difference is minor. They shine a laser with X watts of power on the fuel. The fuel absorbs a percentage of X, let's say 80%. In turn the nuclear reaction generates a certain amount of power. In this experiment, the fuel generated more energy than it was absorbing from the laser (80% of X) but was still less than the full power of the laser (X).

    As far as I'm concerned it's ignition, or proof of concept at least. The fuel is producing more energy than it is consuming.

    Good news, but it's still a rather small hurdle in the long list of big hurdles. That being said, nuclear fusion is absolutely achievable and I have no doubt it will become a primary power source for humans in the not too distant future.

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    Re: Nuclear Fusion Breakthrough at NIF BBC Reports

    Quote Originally Posted by the_recruit View Post
    The difference is minor. They shine a laser with X watts of power on the fuel. The fuel absorbs a percentage of X, let's say 80%. In turn the nuclear reaction generates a certain amount of power. In this experiment, the fuel generated more energy than it was absorbing from the laser (80% of X) but was still less than the full power of the laser (X).

    As far as I'm concerned it's ignition, or proof of concept at least. The fuel is producing more energy than it is consuming.

    Good news, but it's still a rather small hurdle in the long list of big hurdles. That being said, nuclear fusion is absolutely achievable and I have no doubt it will become a primary power source for humans in the not too distant future.
    Thank you for that! So it sounds like it was almost ignition but it wasn't a fully efficient ignition in that it didn't utilize all the power of the laser. Is that about right?

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    Re: Nuclear Fusion Breakthrough at NIF BBC Reports

    Quote Originally Posted by Sherman123 View Post
    Thank you for that! So it sounds like it was almost ignition but it wasn't a fully efficient ignition in that it didn't utilize all the power of the laser. Is that about right?
    That's what I take away from it, yep.

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