Raghar wrote:
> On Apr 30, 6:57 pm, Brian Davis <brda...@[EMAIL PROTECTED]
> wrote:
>> On Apr 30, 11:30 am, Raghar <Ragha...@[EMAIL PROTECTED]
> wrote:
>>
>>> I was wondering about how massive would be a radiation ****eld for a
>>> 200 MW(t) low mass nuclear reactor.
>> As low as you want to make it. Just use vacuum and make the ****p very
>> very long (inverse square law is your friend). If you want it a little
>> smaller than that, use the concept of a "shadow ****eld" (ObSFR:
>> "Flight of the Valkyrie" by Pellegrino). now, how much do you want to
>> refine the question?
>
> While inverse sqare law might help, it's diseaster for a real live
> ****ps. Really long ****p, has really large mass.
>
> Lets assume there is something that could hold pressure of 5
> atmospheres, and the ****eld is deposited at most 10 m away, on
> opposite side of ****eld is an electronic component. How massive would
> be 1 m^2 of ****elding in kg?
Can you clarify? I don't understand what the 5 atm pressure relates
to, or why the electronic component is relevant. Are you talking about
****elding it so that humans are safe? If so, then we need to know how
long the humans will spend there, and how close they will be. For
****elding against gammas, you want high-Z ****elding. For ****elding
against neutrons, you want some hydrogen-rich material such as
paraffin. If this is for an interplanetary space****p, then I think
whatever ****elding you need for cosmic rays is probably also likely
to provide all the ****elding you need against the reactor.
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