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Media Contacts
![Fuel pellets sometimes degrade to a sandlike consistency and can disperse into the reactor core if a rod’s cladding bursts. ORNL researchers are studying how often this happens and what impact it has, in order to let reactors operate as long as possible without increasing risk.](/sites/default/files/styles/list_page_thumbnail/public/2020-08/X2001338_FuelFragmentation_GraphicUpdate_Bumpus_jnj-02_0.jpg?h=049a2720&itok=mzNfF2cS)
A developing method to gauge the occurrence of a nuclear reactor anomaly has the potential to save millions of dollars.
![Hector J. Santos-Villalobos, left, and Oscar A. Martinez](/sites/default/files/styles/list_page_thumbnail/public/2020-08/henaac20.jpg?h=158d9140&itok=-NxooIrE)
Two staff members at the Department of Energy’s Oak Ridge National Laboratory have received prestigious HENAAC and Luminary Awards from Great Minds in STEM, a nonprofit organization that focuses on promoting STEM careers in underserved
![This photo shows the interior of the vessel of the General Atomics DIII-D National Fusion Facility in San Diego, where ORNL researchers are testing the suitability of tungsten to armor the inside of a fusion device. Credit: General Atomics](/sites/default/files/styles/list_page_thumbnail/public/2020-08/X2001140_Tungsten_DIIID_GeneralAtomics_Bumpus_jnj_0.jpg?h=fa422108&itok=9R1Nn6B_)
The inside of future nuclear fusion energy reactors will be among the harshest environments ever produced on Earth. What’s strong enough to protect the inside of a fusion reactor from plasma-produced heat fluxes akin to space shuttles reentering Earth’s atmosphere?
![3D-printed 316L steel has been irradiated along with traditionally wrought steel samples. Researchers are comparing how they perform at various temperatures and varying doses of radiation. Credit: Jaimee Janiga/ORNL](/sites/default/files/styles/list_page_thumbnail/public/2020-08/X2001337_TCR_IrradiatedMaterials_Bumpus_jnj-04.jpg?h=e3a8e2b5&itok=pXslTCBN)
It’s a new type of nuclear reactor core. And the materials that will make it up are novel — products of Oak Ridge National Laboratory’s advanced materials and manufacturing technologies.
![VERA’s tools allow a virtual window inside the reactor core, down to a molecular level.](/sites/default/files/styles/list_page_thumbnail/public/2020-08/Godfrey_2d_pin_power.png?h=507248e9&itok=SIcNrXUE)
As CASL ends and transitions to VERA Users Group, ORNL looks at the history of the program and its impact on the nuclear industry.
![Pu-238 pellet drawing](/sites/default/files/styles/list_page_thumbnail/public/2020-07/Plutonium_Illustration_Blur.png?h=b6236d98&itok=wvSAbP64)
After its long journey to Mars beginning this summer, NASA’s Perseverance rover will be powered across the planet’s surface in part by plutonium produced at the Department of Energy’s Oak Ridge National Laboratory.
![ORNL’s Drew Elliott served as a major collaborator in upgrading the Princeton Plasma Physics Laboratory’s Lithium Tokamak Experiment-Beta. Credit: Robert Kaita, Princeton Plasma Physics Laboratory](/sites/default/files/styles/list_page_thumbnail/public/2020-07/Drew%20Elliot_1.jpg?h=8f8cd18c&itok=U-2mXJIG)
Lithium, the silvery metal that powers smart phones and helps treat bipolar disorders, could also play a significant role in the worldwide effort to harvest on Earth the safe, clean and virtually limitless fusion energy that powers the sun and stars.
![Juergen Rapp](/sites/default/files/styles/list_page_thumbnail/public/2020-06/2013-P02865.png?h=8e10fa90&itok=ACXJScSi)
Juergen Rapp, a distinguished R&D staff scientist in ORNL’s Fusion Energy Division in the Nuclear Science and Engineering Directorate, has been named a fellow of the American Nuclear Society
![ORNL scientists are currently using Proto-MPEX to perform necessary research and development that is needed to build MPEX. Credit: Genevieve Martin/Oak Ridge National Laboratory, U.S. Dept. of Energy](/sites/default/files/styles/list_page_thumbnail/public/2020-06/2019-P15057.jpg?h=c6980913&itok=OMsMVnNV)
Temperatures hotter than the center of the sun. Magnetic fields hundreds of thousands of times stronger than the earth’s. Neutrons energetic enough to change the structure of a material entirely.
![Solid radium sulfate sits in the bottom of a flask during the recovery process. Credit: Oak Ridge National Laboratory, U.S. Dept. of Energy](/sites/default/files/styles/list_page_thumbnail/public/2020-06/Ac227%202.jpg?h=479d286c&itok=AiNceGva)
Oak Ridge National Laboratory researchers have discovered a better way to separate actinium-227, a rare isotope essential for an FDA-approved cancer treatment.