Question about variable yield nuclear weapons

Discussion in 'Physics & Math' started by ColonelKlink1701, Jan 23, 2004.

  1. ColonelKlink1701 Registered Member

    Messages:
    12
    I was wondering how it is possible for them to "dial" the yield without adding or removing any fissionable material.
     
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  3. Zik Registered Member

    Messages:
    20
    It probably, just inserts the tamper deeper, to reflect more stray neutrons back at the Uranium-Plutonium. Basically, turning a crank pushes a piece of metal deeper within the bomb.
     
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  5. NanoTec Registered Senior Member

    Messages:
    30
    Variable yield can be achieved through two methods:

    First the implosion lens can be slightly varied to produce a sub-optimal crush. The surface area of the fissionable material is increased allowing more neutrons to escape thereby reducing the yield.

    Second the couplings between the primary and secondary can be broken before detonation. For example in a fission-fizzle the primary fission core is coupled through an x-ray lens to a tritium-lithium fusion secondary.
     
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