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How dangerous is matter/antimatter collisions?

  1. Oct 20, 2008 #1
    If i had enough matter and antimatter to release same amount of energy as a small camp fire, would the gamma rays be dangerous?
  2. jcsd
  3. Oct 21, 2008 #2
    Are any gamma rays NOT dangerous...I assume you mean to life.
  4. Oct 21, 2008 #3


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    It's all a matter of dose, really.


    "All things are poison and nothing is without poison, only the dose permits something not to be poisonous."--Paracelsus
  5. Oct 21, 2008 #4


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    If you collided a single electron and positron you would only get a pair of gamma photons, the odds of doing much damage with just 2 photons are pretty small.

    If the safe dose of gamma is around 10mSv (that is absorbed 10mJ/kg of body weight) and you weigh 100kg (it's worth hitting the burgers to make the maths easier) then you can absorb about 1kJ of gamma rays - that is the energy output of small campfire (say 1kw) in 1 second.
  6. Oct 21, 2008 #5
    On the other hand the same energy released during the during the course of the campfire squeezed in a few milliseconds tells me I want to stand at a safe distance. The gamma photons would be the least of my worries. Damage would be comparable to more than a few sticks of dynamite.
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