Coherent states of negative ion resonances in electron-molecule interaction are observed in experiments on e -- H2 and e -- D2 reactions. A forward-backward asymmetry is observed in the ejection of H- ions from H2 in this reaction, whereas the asymmetry in D- from D2 is weaker, but changes direction with electron energy. These results arise from attachment of a single electron to a molecule forming coherent superposition of odd and even parity states of negative ions.
Researchers have discovered a new way to produce high energy photon beams. The new method makes it possible to produce these gamma rays in a highly efficient way, compared with today's technique. The obtained energy is a billion times higher than the energy of photons in visible light. These high intensity gamma rays significantly exceed all known limits, and pave the way towards new fundamental studies.
A specific uranium compound has puzzled researchers for thirty years. Although the crystal structure is simple, no one understands exactly what is happening once it is cooled below a certain temperature. Apparently, a 'hidden order' emerges, whose nature is completely unknown.Now physicists have characterised this hidden order state more precisely and studied it on a microscopic scale. To accomplish this, they utilised the High-Field Magnet at the HZB that permits neutron experiments to be conducted under conditions of extremely high magnetic fields.
Scientists at PPPL have completed new simulations that could provide insight into how blobs at the plasma edge behave. The simulations, produced by a code called XGC1 developed by a national team based at PPPL, performed kinetic simulations of two different regions of the plasma edge simultaneously.
A hundred years ago, Albert Einstein published his General Relativity theory, predicting the existence of gravitational waves or ripples in space-time, due to violent motion of massive objects in the universe. Collision and merger of two neutron stars should produce gravitational waves and gamma rays simultaneously. Until a few weeks ago, that could not be proven scientifically. Then researchers saw the collision of two neutron stars on Aug. 17, 2017, and everything changed.
Researchers from Caltech and the University of Southern California (USC) report the first application of quantum computing to a physics problem.
Professor Martijn Kemerink of Linköping University has worked with colleagues in Spain and the Netherlands to develop the first material with conductivity properties that can be switched on and off using ferroelectric polarisation.
A new study has discovered that ice grows differently on water-absorbent vs. water-repellent surfaces. The research suggests that applying water-repellent coatings to windshields before winter storms -- or engineering surfaces that inherently repel water -- could enable a strong breeze to handle the burden of ice removal.
To make natural gas and biogas suitable for use, the methane has to be separated from the CO2. This involves the use of membranes: filters that stop the methane and let the CO2 pass through. Researchers at KU Leuven (University of Leuven), Belgium, have developed a new membrane that makes the separation process much more effective.
This article describes innovative liquid lithium loop to address needs of future fusion power plants.