Category Archives: An Indispensable Truth

Nuclear Accidents

In the early days of civilian nuclear power, there have been a number of small accidents in different countries, but usually there was little release of radiation. Workers were exposed to it, and four died, one in Yugoslavia, one in Argentina, and two in Japan.83 This does not include deaths in Russia. The two well-known, large accidents are Three Mile […]

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Blanket Designs

The main coolants available are pressurized water, liquid metals, and helium. Water can be used only for near-term experiments. Reactors will probably need helium gas at a high temperature. The structural materials would be the same as those considered for the first wall: ferritic steels, vanadium alloys, or silicon carbide composites. The lithium can be in the form of solid […]

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Large Helical Device

The first noncircular stellarator may have been the Heliac in Canberra, Australia, but the granddaddy of them all is the LHD in Toki, Japan, shown in Fig. 10.6. Envisioned by Koji Uo while on sabbatical at Princeton in the 1960s and completed in 1998, this machine showed that large superconducting coils producing 30-T magnetic fields could be manufactured and operated […]

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Hydrogen Cars

A Hydrogen Economy? If we were to replace gasoline with hydrogen to fuel most of our cars, here is how it might work.48 Until nonfossil energy sources are available on a large scale, hydro­gen will be made from natural gas. Gas stations would be replaced by hydrogen stations to which natural gas will be delivered. Hydrogen would be generated locally […]

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Field-Reversed Configuration (FRC)

This interesting device is not really a pinch; it has characteristics of spheromaks, pinches, inertial confinement, and even mirrors. A simple diagram is shown in Fig. 10.33. If you rotate the diagram 90°, it looks like a spheromak (Fig. 10.18), but it has one essential difference. There is no toroidal magnetic field. The toroidal direction is indicated by the ellipses […]

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