Scientific breakthrough in the transmutation of isotopes
Collaboration between the European Commission’s Joint Research Centre (JRC) DG, the University of Jena (Germany), the University of Strathclyde (UK), Imperial College (UK), and the Rutherford Appleton Laboratory (UK) has led to the transmutation of long-lived radioactive iodine-129 into short-lived iodine-128 using very high intensity laser radiation. Until recently, transmutation could only be achieved in nuclear reactors or particle accelerators.
Transmutation – making use of nuclear reactions that will change very long-lived radioactive elements into less radioactive or shorter-lived products – is a concept for nuclear waste management under development in several countries. Very long-lived iodine-129 has a half-life of 15.7 million years, high radiotoxicity and mobility, and is an important constituent of nuclear waste – making it one of the primary risk considerations in the nuclear industry. It currently has to be sheathed in glass and buried deep underground. Handling of iodine is also difficult as it is corrosive and volatile. Through the laser-induced photo-transmutation process, this long-lived isotope was transmuted first to the short-lived isotope iodine-128, which then decays with a half-life of 25 minutes to the stable inert gas xenon-128. The experiments demonstrate the feasibility of transmuting radioactive iodine-129; limitations to scaling up this technique may be the high energy consumption of the laser and the low cross sections of the elements in question, resulting in low transmutation efficiencies.
Joseph Magill | alfa
First quantum photonic circuit with electrically driven light source
27.09.2016 | Westfälische Wilhelms-Universität Münster
Australian technology installed on world’s largest single-dish radio telescope
26.09.2016 | International Centre for Radio Astronomy Research (ICRAR)
Optical quantum computers can revolutionize computer technology. A team of researchers led by scientists from Münster University and KIT now succeeded in putting a quantum optical experimental set-up onto a chip. In doing so, they have met one of the requirements for making it possible to use photonic circuits for optical quantum computers.
Optical quantum computers are what people are pinning their hopes on for tomorrow’s computer technology – whether for tap-proof data encryption, ultrafast...
The Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP has been developing various applications for OLED microdisplays based on organic semiconductors. By integrating the capabilities of an image sensor directly into the microdisplay, eye movements can be recorded by the smart glasses and utilized for guidance and control functions, as one example. The new design will be debuted at Augmented World Expo Europe (AWE) in Berlin at Booth B25, October 18th – 19th.
“Augmented-reality” and “wearables” have become terms we encounter almost daily. Both can make daily life a little simpler and provide valuable assistance for...
With the help of artificial intelligence, chemists from the University of Basel in Switzerland have computed the characteristics of about two million crystals made up of four chemical elements. The researchers were able to identify 90 previously unknown thermodynamically stable crystals that can be regarded as new materials. They report on their findings in the scientific journal Physical Review Letters.
Elpasolite is a glassy, transparent, shiny and soft mineral with a cubic crystal structure. First discovered in El Paso County (Colorado, USA), it can also be...
For the first time, Fraunhofer IKTS shows additively manufactured hardmetal tools at WorldPM 2016 in Hamburg. Mechanical, chemical as well as a high heat resistance and extreme hardness are required from tools that are used in mechanical and automotive engineering or in plastics and building materials industry. Researchers at the Fraunhofer Institute for Ceramic Technologies and Systems IKTS in Dresden managed the production of complex hardmetal tools via 3D printing in a quality that are in no way inferior to conventionally produced high-performance tools.
Fraunhofer IKTS counts decades of proven expertise in the development of hardmetals. To date, reliable cutting, drilling, pressing and stamping tools made of...
At AKL’16, the International Laser Technology Congress held in May this year, interest in the topic of process control was greater than expected. Appropriately, the event was also used to launch the Industry Working Group for Process Control in Laser Material Processing. The group provides a forum for representatives from industry and research to initiate pre-competitive projects and discuss issues such as standards, potential cost savings and feasibility.
In the age of industry 4.0, laser technology is firmly established within manufacturing. A wide variety of laser techniques – from USP ablation and additive...
23.09.2016 | Event News
20.09.2016 | Event News
16.09.2016 | Event News
27.09.2016 | Information Technology
27.09.2016 | Machine Engineering
27.09.2016 | Physics and Astronomy