FirstWallThermalPower:

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   Computes the first wall thermal power.
   Assumes a spherical shell for the wall.

   Type FirstWallThermalPower for a demo.
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   Form:
	pW = FirstWallThermalPower( pFus, rWall, fHeat )
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   ------
   Inputs
   ------
   pFus    (1,:)	  Loss (MW)
   rW      (1,1)	  Radius of the wall (m)
   -------
   Outputs
   -------
   pW      (1,:)	Wall Power (MW/m^2)

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   References: Schaffer, M.J., "Considerations for Steady-State FRC-Based
               Fusion Space Propulsion", GA-A23579, December 2000.
               General Atomics, San Diego, CA.
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Children:

Common: Graphics/Plot2D
FusionPropulsion: Reactor/FusionPower