Embargoed release reports new method for reducing instabilities in fusion plasmas without triggering fresh problem.
In new MIT report, study authors analyze the reasons for the current global stall of nuclear energy capacity and discuss measures that could be taken to arrest and reverse that trend.
The quantum computers of the future will be able to perform computations that cannot be done on today's computers. These may likely include the ability to crack the encryption that is currently used for secure electronic transactions, as well as the means to efficiently solve unwieldy problems in which the number of possible solutions increases exponentially.
University of Tokyo-led researchers showed that long-wavelength terahertz (THz) spectroscopy can detect motion of single molecules, not just molecular ensembles. They used a single-molecule transistor design, where pairs of metal electrodes trap isolated C60 molecules, focus the THz beam onto them, and measure current change caused by THz-induced oscillation. Two vibrational peaks were recorded. The measurement was sensitive enough to register slight peak-splitting caused by electron charging. This could promote wider use of THz spectroscopy.
Researchers advise caution as a commercial-scale nuclear reactor known as HTR-PM prepares to become operational in China. The reactor is a pebble-bed, high-temperature gas-cooled reactor (HTGR), a design that is ostensibly safer but that researchers in the US and Germany warn does not eliminate the possibility of a serious accident. Their commentary, publishing Aug. 23, 2018 in the journal Joule, recommends continued research, additional safety measures, and an extended startup phase allowing for better monitoring.
In a set of recent experiments, scientists have tamed a damaging plasma instability in a way that could lead to the efficient and steady-state operation of ITER, the international tokamak experiment under construction in France to demonstrate the practicality of fusion power.
For the first time, physicists at CERN have observed a benchmark atomic energy transition in anithydrogen, a major step toward cooling and manipulating the basic form of antimatter. Antimatter, annihilated on impact with matter, is notoriously tricky to capture and work with. But its study is key to solving one of the great mysteries of the universe: why anti-matter, which should have existed in equal amounts to matter at the time of the Big Bang, has all but disappeared.
A new study carried out at the Department of Energy's Thomas Jefferson National Accelerator Facility has confirmed that increasing the number of neutrons as compared to protons in the atom's nucleus also increases the average momentum of its protons. The nuclear physics result, which has implications for the dynamics of neutron stars, has been published in the journal Nature.
In neutron stars, protons may do the heavy lifting, according to MIT researchers. Their new study suggests that the positively charged particles may have an outsize influence on the properties of neutron stars and other neutron-rich objects.
New discovery published in Science explains what happens during the phase transition in Dirac materials, paving the way for engineering advanced electronics that perform significantly faster.