An international research team led by the University of Liverpool has made a discovery that will help with the search for electric dipole moments (EDM) in atoms, and could contribute to new theories of particle physics such as supersymmetry.
Short lived isotopes of both radon and radium have both been identified as potential candidates for measuring EDM in atoms.
However, in a paper published in Nature Communications researchers conclude, for the first time, that radon atoms provide less favourable conditions for the enhancement of a measurable atomic EDM than radium.
The researchers exploited the ISOLDE facility at CERN to accelerate beams of radioactive radon ions and were able to measure the properties of rotating radon nuclei.
The experiments showed that the radon isotopes 224Rn and 226Rn vibrate between a pear shape and its mirror image but do not possess static pear-shapes in their ground states. This behaviour is quite different to their neighbouring radium isotopes that are permanently deformed into the shape of a pear.
Liverpool Professor of Physics, Peter Butler, who is the lead author of the paper and spokesperson of the collaboration that carried out the research, said: "This research builds on our experimental observation of nuclear pear shapes in 2013.
"We find that certain radon isotopes vibrate between a pear shape and its mirror image. This is in contrast to radium, where we have previously shown that some radium isotopes are permanently deformed into the shape of a pear.
"This finding is important for searches for EDMs in atoms which, if measurable, would require revisions of the Standard Model that could explain the matter-antimatter asymmetry in the universe."
The paper `The observation of vibrating pear-shapes in radon nuclei' (doi: 10.1038/s41467-019-10494-5) is published today in Nature Communications.
The experiments were conducted at HIE-ISOLDE at CERN, Switzerland in collaboration with University of the West of Scotland, UK; University of the Western Cape, South Africa; TRIUMF, Canada; Lund University, Sweden; University of Michigan, USA; INFN Legnaro, Italy; KU Leuven, Belgium; University of Guelph, Canada; University of Cologne, Germany; TU Darmstadt, Germany; University of Warsaw, Poland; University of Jyvaskyla, Finland; University of Oslo, Norway; University of York, UK; JINR Dubna, Russia; CSIC Madrid, Spain; CEA Saclay, France.
Sarah Stamper | EurekAlert!
Swiss space telescope CHEOPS: Rocket launch set for 17 December 2019
05.12.2019 | Universität Bern
A question of pressure
05.12.2019 | Physikalisch-Technische Bundesanstalt (PTB)
With ultracold chemistry, researchers get a first look at exactly what happens during a chemical reaction
The coldest chemical reaction in the known universe took place in what appears to be a chaotic mess of lasers. The appearance deceives: Deep within that...
Abnormal scarring is a serious threat resulting in non-healing chronic wounds or fibrosis. Scars form when fibroblasts, a type of cell of connective tissue, reach wounded skin and deposit plugs of extracellular matrix. Until today, the question about the exact anatomical origin of these fibroblasts has not been answered. In order to find potential ways of influencing the scarring process, the team of Dr. Yuval Rinkevich, Group Leader for Regenerative Biology at the Institute of Lung Biology and Disease at Helmholtz Zentrum München, aimed to finally find an answer. As it was already known that all scars derive from a fibroblast lineage expressing the Engrailed-1 gene - a lineage not only present in skin, but also in fascia - the researchers intentionally tried to understand whether or not fascia might be the origin of fibroblasts.
Fibroblasts kit - ready to heal wounds
Research from a leading international expert on the health of the Great Lakes suggests that the growing intensity and scale of pollution from plastics poses serious risks to human health and will continue to have profound consequences on the ecosystem.
In an article published this month in the Journal of Waste Resources and Recycling, Gail Krantzberg, a professor in the Booth School of Engineering Practice...
Conventional light microscopes cannot distinguish structures when they are separated by a distance smaller than, roughly, the wavelength of light. Superresolution microscopy, developed since the 1980s, lifts this limitation, using fluorescent moieties. Scientists at the Max Planck Institute for Polymer Research have now discovered that graphene nano-molecules can be used to improve this microscopy technique. These graphene nano-molecules offer a number of substantial advantages over the materials previously used, making superresolution microscopy even more versatile.
Microscopy is an important investigation method, in physics, biology, medicine, and many other sciences. However, it has one disadvantage: its resolution is...
03.12.2019 | Event News
15.11.2019 | Event News
15.11.2019 | Event News
05.12.2019 | Life Sciences
05.12.2019 | Life Sciences
05.12.2019 | Materials Sciences