Oak Ridge brings fusion and fission together for clean energy synergy

June 8, 2021, 12:06PMSponsored ContentORNL
ORNL associate laboratory director Kathy McCarthy at the prototype which led to the Material Plasma Exposure eXperiment (MPEX), a device that will support fusion materials research. Photo: ORNL

Oak Ridge National Laboratory has a long record of advancing fusion and fission science and technology. Today, the lab is focused more than ever on taking advantage of that spectrum of nuclear experience to accelerate a viable path to fusion energy and to speed efficient deployment of advanced nuclear technologies to today’s power plants and future fission systems.

Radiation myths continue

May 13, 2021, 9:30AMANS Nuclear Cafe

Hargraves

Atomic fission can provide all the world’s people with as much emission-free electricity as they need for prosperity, but the cost of nuclear energy has risen due to excessive regulations that have been enacted in reaction to the general public's excessive fear of radiation. That’s according to Robert Hargraves, who teaches energy policy at Dartmouth’s Osher Lifelong Learning Institute and is a cofounder of nuclear engineering company ThorCon International.

In an article published by RealClearEnergy, Radiation: More Terrifying Than Night Air?, Hargraves posits that many people fear radiation because they don’t understand it, much like Americans who believed until the 20th century that night air was poisonous.

The power to save the world … from asteroids

April 12, 2021, 6:59AMANS Nuclear Cafe
In this illustration of the effects of two neutron yields (50 kt and 1 Mt) and two neutron energies (14.1 MeV and 1 MeV), the black dots represent the location of a nuclear device. Dark blue indicates where the asteroid remains solid, while all other colors show where material has been melted or vaporized. The illustration depicts asteroids with 0.8-m and 5-m diameters—much smaller than the 300-m asteroid simulated in the study—to enhance the visibility of the area of the energy deposition. Image: LLNL

A research collaboration between Lawrence Livermore National Laboratory and the Air Force Institute of Technology (AFIT) has investigated how the neutron energy generated by the detonation of a nuclear device could affect the path and speed of an asteroid on a collision course with Earth by melting and vaporizing a portion of the asteroid. The research, which compared the deflection caused by two different neutron energies—14.1 MeV and 1 MeV, representing fusion and fission neutrons, respectively—is described in an article published by LLNL on April 8.