Sandia National Laboratories researcher Daniel Sinars demonstrates the setup he and his team created to peer into the center of Sandia’s Z machine at the moment of firing. The crystal under his finger is attached to portions of a Z target configuration. (Photo by Randy Montoya)
Peering into the center of Sandia National Laboratory’s Z machine as it fires had been a feat unachievable for a decade.
Other than a nuclear bomb, Z is the most powerful generator of X-rays on the planet. Last year, its central mechanism, called a Z-pinch, fused isotopes of hydrogen to create nuclear fusion. Now, by inserting a pretty, two-inch-long crystal that reflects at only a single frequency into the hellish center of Z as it fires, researchers have been able to visually filter out the bedlam of more than 99 percent of the energies generated.
By shining the energy from a relatively weak laser beam through the machine and reflecting it off the crystal to a detector, the researchers have emerged with a series of pictures of the machine’s key process -- the dissolution of a wire cage (about the size of a spool of thread) into ionized gas particles. By viewing the dissolution nanosecond by nanosecond, Z experimentalists can see more rapidly and accurately how to improve the final output.
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In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.
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Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.
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The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
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An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.
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