Google Play icon

Fusion – Argon calling

Share
Posted December 3, 2019

As scientists study approaches to best sustain a fusion reactor, a team led by Oak Ridge National Laboratory investigated injecting shattered argon pellets into a super-hot plasma, when needed, to protect the reactor’s interior wall from high-energy runaway electrons.

Other pellet materials, frozen from room-temperature gasses, have successfully reduced the plasma’s thermal energy, but argon was most effective at runaway electron dissipation.

Scientists tested ORNL-developed pellet injection technology with shattered argon pellets shot out of a bent shatter tube in a lab at ORNL. The technology was later tested on an experimental fusion plasma to mitigate runaway electrons, preventing interior wall damage. Credit: Trey Gebhart/Oak Ridge National Laboratory, U.S. Dept. of Energy

Using fuel pellet injection technology – which literally shoots cryogenic pellets of fuel into the plasma to raise its density – the team used an injector optimized for argon during a series of tests at the DIII-D National Fusion Facility. “Now that we have demonstrated argon’s effectiveness, our next step is to determine how many pellets and pellet injectors are needed for a solution that’s applicable,” said ORNL’s Larry Baylor. This research may be scaled up for possible application on ITER, the international experimental reactor.

Source: ORNL

 

Featured news from related categories:

Technology Org App
Google Play icon
87,029 science & technology articles

Most Popular Articles

  1. You Might Not Need a Hybrid Car If This Invention Works (January 11, 2020)
  2. Toyota Raize a new cool compact SUV that we will not see in this part of the world (November 24, 2019)
  3. An 18 carat gold nugget made of plastic (January 13, 2020)
  4. Human body temperature has decreased in United States, study finds (January 10, 2020)
  5. Donkeys actually prefer living in hot climate zones (January 6, 2020)

Follow us

Facebook   Twitter   Pinterest   Tumblr   RSS   Newsletter via Email