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В Kroogi с 29 ноября 2016
New York, Соединенные Штаты
CERN, the European Center for Nuclear Research (CERN), has reported the first spectroscopic measurements of antimatter atoms, a long-standing goal of antimatter physics research, according to a report published online today in the journal Nature. This achievement marks a significant step forward in the way human beings attempt to differentiate between high-precision test materials and antimatter behavior.
The latest advances in the antiproton reducer at the European Nuclear Center have allowed researchers to capture and measure anti-proton and anti-hydrogen atoms. Now, Danish scientist Jeffrey Hirst and his colleagues from the European Nuclear Center Anti-Hydrogen Laser Physics Unit (ALPHA) have succeeded in capturing anti-hydrogen atoms in a cylindrical vacuum laser pointers chamber. The vacuum chamber was only 280 mm long and 44 mm in diameter. The researchers measured the transition of the 1S-2S transition from the ground state to the excited state through a window on the vacuum chamber. Why the universe today looks almost entirely composed of ordinary matter, this is a major physics puzzle. Because the classical model of particle physics predicts that there should be the same amount of matter and antimatter after the Big Bang. Light irradiation can stimulate atoms, when the atoms return to the ground state will be light, the formation of the frequency distribution of light, you can borrow its spectrum to accurately measure the atomic properties, which is the basic principle of spectroscopy. However, the antimatter is difficult to produce and capture, because the anti-matter once contact with the material will annihilate, which scientists measure their properties to challenge.
The team reports that the trans-hydrogen transition frequency is consistent with the hydrogen transition frequency. Hydrogen spectra have been characterized with high precision, so improvements in antihydrogen spectroscopy should result in a high sensitivity test of material-antimatter symmetry.

The ALPHA device is the "high power laser pointer weapon" for capturing anti-atoms in the European nuclear center. The team previously "grabbed" the anti-hydrogen atoms for 1,000 seconds with a special magnetic field and for the first time directly analyzed the interaction between antimatter and gravitational forces.
20 дек. 2016 08:25
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According to foreign media reports, the world's first commercial laser pointer communication system, "European Data Relay System-A" (EDRS-A) load has begun to serve the "Sentinel" series of satellites. EDRS-A in January 20, 2016 successfully launched.
EDRS is jointly developed by the European Space Agency (ESA) and Airbus Defense under the "Public-Private Partnership" (PPP) mechanism and includes a laser communication link for inter-satellite communication and a microwave communication link for satellite-to-earth communications , The maximum inter-satellite transmission rate of up to 1.8 gigabits / second.

In addition to EDRS-A, will be launched in 2017, a dedicated satellite EDRS-C, EDRS-D satellite in 2020, in order to achieve global data relay service. Can be sent to Earth observation satellites and airborne platform to obtain real-time data relay to the ground end-users to improve the ability of natural disaster monitoring and response for the government and security sector encryption transmission service.
Space green laser pointer communication with high-speed real-time, high-capacity and confidentiality stability. EDRS will not only meet the European space activities on the spatial data transmission rate, transmission capacity and real-time growing demand, but also to make Europe from non-European ground station dependency, maintaining the strategic independence of space communications.


29 нояб. 2016 09:32
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