Fusion–and its Radioactive and Nuclear Weapons Links

Source: Fusion–and its Radioactive and Nuclear Weapons Links

There was great hoopla—largely unquestioned by media— with the announcement last week by the U.S. Department of Energy of a “major scientific breakthrough” in the development of fusion energy.

“This is a landmark achievement,” declared Energy Secretary Jennifer Granholm. Her department’s press release said the experiment at Lawrence Livermore National Laboratory in California “produced more energy from fusion than the laser energy used to drive it” and will “provide invaluable insights into the prospects of clean fusion energy.”

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“Nuclear fusion technology has been around since the creation of the hydrogen bomb,” noted a CBS News article covering the announcement. “Nuclear fusion has been considered the holy grail of energy creation.” And “now fusion’s moment appears to be finally here,” said the CBS piece.

But, as Dr. Daniel Jassby, for 25 years principal research physicist at the Princeton Plasma Physics Lab working on fusion energy research and development, concluded in a 2017 article in the Bulletin of the Atomic Scientists, fusion power “is something to be shunned.”

His article was headed “Fusion reactor: Not what they’re cracked up to be.”

“Fusion reactors have long been touted as the ‘perfect’ energy source,” he wrote. And “humanity is moving much closer” to “achieving that breakthrough moment when the amount of energy coming out of a fusion reactor will sustainably exceed the amount going in, producing net energy.”

“As we move closer to our goal, however,” continued Jassby, “it is time to ask: Is fusion really a ‘perfect’ energy source?” After having worked on nuclear fusion experiments for 25 years at the Princeton Plasma Physics Lab, I began to look at the fusion enterprise more dispassionately in my retirement. I concluded that a fusion reactor would be far from perfect, and in some ways close to the opposite.”

“Unlike what happens” when fusion occurs on the sun, “which uses ordinary hydrogen at enormous density and temperature,” on Earth “fusion reactors that burn neutron-rich isotopes have byproducts that are anything but harmless,” he said.

A key radioactive substance in the fusion process on Earth would be tritium, a radioactive variant of hydrogen.

Thus there would be “four regrettable problems”—“radiation damage to structures; radioactive waste; the need for biological shielding; and the potential for the production of weapons-grade plutonium 239—thus adding to the threat of nuclear weapons proliferation, not lessening it, as fusion proponents would have it,” wrote Jassby.