The Crab nebula, an iconic Milky Way supernova remnant, as viewed by the Herschel Space Observatory and the Hubble Space Telescope. (Image: NASA, ESA, and Allison Loll/Jeff Hester, Arizona State University)
Traces of freshly made plutonium and radioactive iron recovered from the bottom of the Pacific Ocean are contributing to an understanding of how heavier elements are created from exploding stars and other cosmic events, according to a National Public Radio report.
First Light Fusion CEO Nick Hawker stands near the target end of the 22-meter-long gas gun. (Photo: First Light)
Inside a new steel-clad facility nicknamed “The Citadel,” First Light Fusion has installed a 22-meter two-stage gas gun—the third-largest such component in Europe.
The demonstration program aims to accelerate innovation and deployment of energy concepts at the intersection of industry needs, NRIC’s mission, and the R&D portfolio of CTD IES. (Graphic: BEA)
The National Reactor Innovation Center (NRIC) wants to hear from developers and end users interested in integrated energy systems for advanced reactors. Battelle Energy Alliance (BEA), the managing and operating contractor for Idaho National Laboratory, has issued a call for Expressions of Interest for a potential multi-phase demonstration program for innovative uses of nuclear energy, to be carried out by NRIC and the Crosscutting Technology Development Integrated Energy Systems (CTD IES) program. The final date for responses is May 21.
NorthStar is capable of producing Mo-99 using non-uranium-based processes. Photo: NorthStar Medical Radioisotopes
Completing a 5,700-mile journey from Belgium, two 24-ton particle accelerators were delivered to NorthStar Medical Radioisotopes’ facility in Beloit, Wis., on April 22, the Wisconsin State Journal reported. Photos and a video of the accelerators being received at the facility are included in the report.
Artist’s view of heavy water eliciting sweet taste in humans. Graphic design: Tomáš Bello/IOCB Prague
Is isotope science all sweetness and light? Recent headlines on research confirming the sweet taste of heavy water and the creation of the lightest isotope of uranium yet may give that impression. But the serious science behind these separate research findings has implications for human health and for the understanding of the process of alpha decay.
An image from a video released by INL shows MARVEL, to be installed in a concrete pit within the TREAT reactor building. Source: INL
Scientists studied the migration of six butterflies (from top left to bottom right): American Snout butterfly, Queen butterfly, Cloudless Sulphur butterfly, Empress Leilia butterfly, Variegated Fritillary butterfly, and Southern Dogface butterfly. (Composite photo: IAEA; photo credits: S. Bright, V. Charny, J. Gallagher, J. Green)
While scientists can tag migrating birds, mammals, and other animals to track their movements, the precise migration patterns of butterflies and other insects too small for tagging evaded scientists’ scrutiny for decades. That changed in 1996, when Leonard Wassenaar and Keith Hobson, working at the time as isotope scientists for Environment Canada, demonstrated that isotopic techniques could be used to determine the origin of individual monarch butterflies and deduce the species’ annual migration routes. Now, the same technique is being used to study other butterfly species.
Lise Meitner and Otto Hahn in their lab in Germany in 1913.
Comparing matter to a “lush tapestry, woven from a complex assortment of threads,” physics writer Emily Conover traces the evolution of our understanding of the atom over the past century in the recent Science News article, “How matter’s hidden complexity unleashed the power of nuclear physics.” Conover uncovers how our vision of matter changed from that of a “no-nonsense plaid” to one of an “ornate brocade,” ultimately transforming nuclear physics from an arcane academic pursuit to something that forever changed the world.
Construction of Norman was completed in 2017. Photo: TAE Technologies
TAE Technologies has announced that it has produced a stable plasma of over 50 million degrees celsius inside a fusion device using a beam-driven, field-reversed configuration. “By generating such stable high-temperature plasmas, TAE has now validated that the company’s unique approach can scale to the conditions necessary for an economically viable commercial fusion power plant by the end of the decade,” the company declared in its April 8 press release. The company added that the results indicate the design’s linear configuration improves plasma confinement as temperatures rise.
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.