• Radiation detection device to help in detecting nuclear weapons, materials

    Researchers have developed a next-generation material for nuclear radiation detection that could provide a significantly less expensive alternative to the detectors now in commercial use. Specifically, the high-performance material is used in a device that can detect gamma rays, weak signals given off by nuclear materials, and can easily identify individual radioactive isotopes. Potential uses for the new device include more widespread detectors — including handheld — for nuclear weapons and materials as well as applications in biomedical imaging, astronomy and spectroscopy.

  • Future of testing and treating chlorine gas attacks

    As experts sort through questions around recent chemical attacks in Syria, future answers to quickly testing and treating those who may have been exposed to chlorine gas may lie in chlorinated lipids, says a scientist.

  • For nuclear weapons reduction, a way to verify without revealing

    In past negotiations aimed at reducing the arsenals of the world’s nuclear superpowers, chiefly the U.S. and Russia, a major sticking point has been the verification process: How do you prove that real bombs and nuclear devices — not just replicas — have been destroyed, without revealing closely held secrets about the design of those weapons? New isotope-detection method could prove compliance but avoid divulging secrets.

  • Pipe-crawling robot to help decommission nuclear facility

    A pair of autonomous robots will soon drive through miles of pipes at the U.S. Department of Energy’s former uranium enrichment plant in Piketon, Ohio, to identify uranium deposits on pipe walls. Shuttered since 2000, the plant began operations in 1954 and produced enriched uranium, including weapons-grade uranium. With 10.6 million square feet of floor space, it is DOE’s largest facility under roof — the size of 158 football fields, with 75 miles of process pipe.

  • Portable device to sniff out trapped humans

    The first step after buildings collapse from an earthquake, bombing or other disaster is to rescue people who could be trapped in the rubble. But finding entrapped humans among the ruins can be challenging. A new, inexpensive sensor is light and portable enough for first responders to hold in their hands or for drones to carry on a search for survivors.

  • Understanding explosive sensitivity with molecule design

    Explosives have an inherent problem - they should be perfectly safe for handling and storage but detonate reliably on demand. Using computer modeling and a novel molecule design technique, scientists have replaced one “arm” of an explosive molecule to help unravel the first steps in the detonation process and better understand its sensitivity — how easily it begins a violent reaction.

  • Russia tested using door handles to deliver nerve agent before its agents attacked Skripal

    The U.K. on Friday released previously classified intelligence that show that Russia had tested whether door handles could be used to deliver nerve agents and had targeted the email accounts of Sergei and Yulia Skripal since at least 2013. The information about the door handle and email was made in a letter from Sir Mark Sedwill, the U.K.’s national security adviser, to NATO secretary general, Jens Stoltenberg. It is highly unusual for the U.K. to make such intelligence public, but the U.K. government appears to have concluded that such a move was necessary to counter the effective lies-and-disinformation campaign Russia has been conducting in an effort to deny its operatives has poisoned Skripel and his daughter.

  • German company defies U.S., continues sending Iran parts used in Syria chemical attacks

    A German company involved in Syrian chemical attacks has defied a warning from the United States and continues trading with Iran. A Syrian photographer had found parts made by German company Krempel in Iranian-produced chemical rockets that were used in chemical warfare against Syrian civilians in January and February.

  • Dozens killed in Syrian army chemical-weapons attack on rebel-held town

    More than seventy civilians have been killed and more than 500 injured by a poisonous gas attack launched by President Bashar al-Assad’s forces against the rebel-held town of Douma. Syrian army helicopters had dropped several barrel bombs filled with chemicals on Douma, in eastern Ghouta, the last rebel-held stronghold in Syria. The Syrian army used both chlorine and nerve agents in the attack.

  • Nuclear waste may soon be a thing of the past

    During the Cold War, the U.S. Department of Energy produced tons of nuclear material for the development of the nation’s nuclear weapons stockpile. Today, the United States is awash in radioactive material from weapons production and some from nuclear power plants that could take 100,000 years to go away. A recent FIU chemistry graduate might help researchers unlock the secrets to make nuclear waste safer.

  • Funding restored to National Biodefense Analysis and Countermeasures lab

    The Fort Detrick, Maryland-based National Biodefense Analysis and Countermeasures Center (NBACC) is no longer facing an immediate jeopardy. The federal omnibus spending bill,  released last Wednesday evening, provided full funding for the biohazard laboratory – funding which the original administration’s budget proposal eliminated.

  • Remotely monitoring nuclear reactors

    A new U.S. Department of Energy project to develop the first detector able to remotely monitor nuclear reactors will also help physicists test the next generation of neutrino observatories. Nuclear reactions produce telltale antineutrinos – the antimatter counterpart of neutrinos. The new detectors will be designed to measure the energy of such antineutrinos and the direction from which they come, allowing monitoring of reactors from a distance of 25 kilometers to verify nonproliferation agreements.

  • Efficient extraction may improve management of nuclear fuel

    After used nuclear fuel is removed from a reactor, it emits heat for decades and remains radioactive for thousands of years. The used fuel is a mixture of major actinides (uranium, plutonium), fission products (mainly assorted metals, including lanthanides) and minor actinides (i.e., americium, curium and neptunium). After the cesium-137 and strontium-90 fission products decay in a few hundred years, the minor actinides and plutonium generate the most heat and radioactivity. Removal of the minor actinides, especially americium, can help nuclear power producers reduce and better manage the waste stream.

  • Deny and distort: A timeline of Russia's changing story on Skripal poisoning

    Since the poisoning of the Russian double agent Sergei Skripal and his daughter on 4 March in England, Russian officials have been consistent about one thing: Moscow didn’t do it. Otherwise, they have offered a hodgepodge of theories, evasions, and refutations to parry British accusations that a Soviet-era nerve agent was likely used to poison Skripal and his daughter. British Foreign Minister Boris Johnson said on 19 March that Moscow was “not fooling anyone” with its “increasingly absurd” denials of culpability for use of the nerve agent on British soil. Vladimir Putin was trying to “conceal the needle of truth in a haystack of lies and obfuscation,” Johnson said.

  • Sandia transport triathlon puts spent nuclear fuel to the test

    Nuclear power supplies almost 20 percent of U.S. electricity and is the leading carbon-neutral power source. However, it produces between 2,200 and 2,600 tons of spent fuel in the United States each year. Fuel rods become brittle and highly radioactive while powering the nuclear reactor, making safe transportation important. Sandia National Laboratories researchers completed an eight-month, 14,500-mile triathlon-like test to gather data on the bumps and jolts spent nuclear fuel experiences during transportation.