Slashdot Mirror


Air Force Researching Antimatter Weapons

mlmitton writes "The San Francisco Chronicle is reporting that the Air Force is actively pursuing antimatter weapons. Such weapons would easy eclipse nuclear weapons in power, e.g., 1 gram of antimatter would equal 23 space shuttle fuel tanks of energy. Perhaps more interesting, after an initial inquiry by the Chronicle in the summer, the Air Force issued a gag order that prohibits any Air Force employee from discussing antimatter research or funding."

16 of 1,062 comments (clear)

  1. Really... by jsoffron · · Score: 5, Insightful

    isn't this a tremendous waste of money? I'm generally pretty high on national defense, but is our biggest national security threat really that nuclear bombs aren't powerful enough?

    We can not afford a mine shaft gap!

    1. Re:Really... by Jacer · · Score: 3, Insightful

      If you can have a weapon more powerful than a nuke, without the fallout, they'll be more prone to use them.

      --
      --fetch daddy's blue fright wig, i must be handsome when i release my rage
    2. Re:Really... by carpe_noctem · · Score: 4, Insightful

      This isn't the thing that's kept us from using nuclear weapons in the past. The thing that has is mutually assured destruction (or MAD, if you will).

      Nuclear weapons were successful in ending the second world war because we were the only country that had them at the time. We couldn't use them in any cold war conflicts because our enemies could use them on us.

      Likewise, the development of anti-matter weapons is useless too, because even if we develop the technology to use them, long-range nuclear weapons from our enemies can still be used against us.

      Creating more powerful weapons in an arms race is kind of like seeing who can count to the biggest number faster... I doubt we'll ever reach a largest number, and eventually both people will shout out "infinity plus one!".

      --
      "Quoting famous computer scientists out of context is the root of all evil (or at least most of it) in programming." - K
  2. How to detonate it? by FTL · · Score: 3, Insightful
    One of the potential problems with antimatter is how to use it. If one just removes it from its isolation container, it may just glow, spit and fizzle for an extended period of time, rather than explode properly. As the first particles of matter comes in contact with it, that matter (and the corresponding amount of anti-matter) will annihilate, causing a blast that may separate the two objects for a while. So to detonate properly one might need some very fancy geometries or implosion schemes that make an atomic bomb look like child's play.

    Alternatively antimatter may blow up just fine without any assistance. It's all theory just now. We'll have to drop a gram of it to be sure.

    --
    Slashdot monitor for your Mozilla sidebar or Active Desktop.
  3. Funny the way the article is worded... by Weaselmancer · · Score: 5, Insightful

    The San Francisco Chronicle is reporting that the Air Force is actively pursuing antimatter weapons. Such weapons would easy eclipse nuclear weapons in power, e.g., 1 gram of antimatter would equal 23 space shuttle fuel tanks of energy.

    Are we sure they're pursuing weapons? We are talking about the Air Force, and it's funny how they'd compare the relative energy to a spaceship fuel tank, of all things...

    --
    Weaselmancer
    rediculous.
  4. Not as spectacular as you think. by techno-vampire · · Score: 4, Insightful

    During a panel at LACon II in '84, Dr. Forward mentioned that calculations showed that an anti-matter bowling ball wouldn't go up in a blaze of light and gamma, it'd sit on the floor sizzling like a drop of water on a griddle for several minutes. From what I gathered, the matter and anti-matter only interact as they come into contact with each other, and even in a normal Earth atmosphere there's a limit as to how many particles touch at any given time. Also, of course, the reaction heats the air up, causing convection currents that lower the pressure. Thinking about it, I guess you'd get the fastest reaction with an anti-dust so that there's as much surface as possible.

    --
    Good, inexpensive web hosting
  5. Re:How about research them... by nacturation · · Score: 4, Insightful

    But destructe research wins over constructive alternatives hands down.

    Given that matter + anti-matter is a purely destructive process to begin with, it isn't surprising that this is a key area of military research. On the brighter side, tons of everyday inventions funnel down from military funded projects, so it's not all doom and gloom.

    --
    Want to improve your Karma? Instead of "Post Anonymously", try the "Post Humously" option.
  6. Weapon research == Power plant research. by SatanicPuppy · · Score: 5, Insightful

    So yea, woo hoo anti-matter power!

    Sure, it's radioactive, just like fission, but hey antimatter is cheap at $62.5 trillion per gram, and it's 10-100 times more powerful!

    Not sure what the point would be in antimatter weapons, besides serious coolness. Nukes are at least stable at room temperature, and if you drop a ball of plutonium on your foot, all you get is broken toes. Wouldn't want to have a power failure anywhere NEAR antimatter.

    --
    ad logicam Claiming a proposition is false because it was presented as the conclusion of a fallacious argument.
  7. Re:How about research them... by kfg · · Score: 3, Insightful

    Because of the vast amount of energy required to create antimatter. The sun is an energy source because it's there and only needs to be harnessed. Likewise sun created energies such as wind, wood and petroleum. The energy has already been created and stored.

    Any energy you have to 'make' invokes the Second Law. This doesn't mean you shouldn't bother, because we still need ways to store and transfer energy, which is what we do with hydrogen, antimatter or storage batteries. The fact they are total energy negative isn't the point, it's that they put the energy where we want it in an extractable form.

    And extracting energy where you want it is what weapons technology is all about.

    Lots of energy. It doesn't matter what that energy cost you in energy.

    KFG

  8. Pointless. by Jaywalk · · Score: 3, Insightful

    Exactly what military threat do they envision where they need a bigger "boom" than what they have now? Every current military threat isn't a matter of having insufficient explosive power, but having difficulty ascertaining the target. This stuff may have practical use as a non-military explosive (e.g., asteroid deflection) but the U.S. military already has the necessary force to blow up anything on earth using existing technology.

    --
    ===== Murphy's Law is recursive. =====
  9. Re:Energy Conversion by Egonis · · Score: 5, Insightful

    How about using this kind of power for POSITIVE purposes? Like low-cost, efficient, and safe energy?

  10. Wrong warriors, wrong workplace, wrong spacetime by Doc+Ruby · · Score: 3, Insightful

    Antimatter research is extremely valuable science. Insight into the mechanisms of anti/matter annihilation, and its total (or nearly) conversion to energy, will inform science from nuclear energy to nano (femto?) tech and beyond. It's best performed in space, away from the rest of the world which it can contaminate with either annihilable (anti)material or radiation from the reaction. But budgeting the Air Force to make bombs out of it is insane. We've already got expensive ginormous bombs that scare everyone silly, and send the craziest of us into terrorism to compete. How about we just shift that Pentagon budget across to NASA? That will satisfy the aerospace bribers^Wlobbyists who are pushing this stuff, but keep them serving a sustainable market.

    --

    --
    make install -not war

  11. Re:If you're dropping The Bomb anyway... by Greyfox · · Score: 3, Insightful
    They say soldiers, but hasn't the only use of nuclear weapons in a wartime scenario been against civilians? Oh and our own guys in testing, of course. I was not under the impression that nuclear weapons have ever been used against anyone else's army. And during the cold war, I'm pretty sure that the vast majority of the targets on either side were not military.

    So lets not decieve each other about who such a weapon will be used on, nor its ultimate purpose. Such a bomb would be a weapon designed to kill off the civilian population of a country while leaving their oil fields standing. OK, maybe I'm a little cynical, but I grew up during the height of the cold war at what would have been ground 0 had there been a war. I think I've earned the right to be a bit cynical.

    It's been a while, but I believe I heard about several treaties back in the day banning the research on the "Neutron Bomb." No one particularly liked the idea of a clean weapon that could kill off a large population. All you'd have to do is bomb a region, send some guys in to clear the bodies out and then start moving your own people in. I wouldn't trust the most saintly of governments with a power like that, much less my own.

    I would not, however, object to a particle/beam weapon that could cut an enemy tank or missile up like a big piece of cheese.

    --

    I'm trying to teach myself to set people on fire with my mind... Is it hot in here?

  12. Ding! by mikeee · · Score: 5, Insightful

    I think you've got it. Consider that space shuttle.

    It's something like 95% fuel by weight on takeoff. Now, if your engines are burning antimatter, you can replace all that weight with payload and still reach orbit!

    If the antimatter could be manufactured for a reasonable multiple of the energy cost, it would cause the cost of getting stuff into space to drop dramatically.

  13. Re:Energy Conversion by Rei · · Score: 3, Insightful

    ... which points out one of the silly things about this. The headline stated:

    "Such weapons would easy eclipse nuclear weapons in power"

    No. Such weapons would easily eclipse nuclear weapons in *fuel energy density*. They would not eclipse nuclear weapons in energy, or even overall energy density, without radical breakthroughs. Antimatter is just too expensive to produce, and requires such large containment structures, that you can't get either sizable amounts of raw antimatter energy, nor great energy density. Perhaps antimatter-catylized fusion might produce new, useful weapons (small fusion bombs that don't need a fission bomb to start the reaction), although I personally am not in favor of blurring the line between conventional and nuclear weapons.

    Still, I guess there is one good thing that will come of this: I always felt we should spend more money on basic research and less on the military. Here, the military is spending its money on basic research ;)

    --
    "You abandoned me! You abandoned my hatred!" "I... I have cuttlefish..."
  14. Re:Probably useless by AKAImBatman · · Score: 3, Insightful

    Considering that I have no idea where they'd get the required amounts of antimatter from, I think the military is having fun blowing smoke up our collective asses. (And those of our enemies.) However, the military *may* be looking into Antimatter catalyzed fissionweapons. Such weapons would need only a few particles of antimatter to fuel a fission warhead that could fit in the palm of your hand.