NeutronShieldThickness:
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Compute neutron shield thickness.
It uses the thickness for 10% neutron attenuation.
The 10% number comes from detailed analyses of neutron/shield
interaction and varies with the shield material. The default is 0.31
and is based on a lithium hydride shield.
The curve fit is not perfect. At attenuation levels of 1 (i.e. no
shielding) you will get a finite thickness.
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Form:
t = NeutronShieldThickness( f, rW, lambda )
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Inputs
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f (1,:) Attenuation (Shielded flux/unshielded flux)
rW (1,1) Wall radius (m)
lambda (1,1) Shield thickness for a 10 fold reduction (m)
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Outputs
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t (1,1) Total wall thickness (m)
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Reference: Santarius, J.F. and B.G. Logan, "Generic Magnetic Fusion
Rocket", UWFDM-914, University of Wisconsin, February 1998.
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Children:
Common: Graphics/Plot2D
