Can we control antimatter?
First step to check the fundamental symmetries of the Standard Model: At CERN, anti-hydrogen atoms were captured
Geneva (Switzerland) - At the European nuclear and particle research center Cern, anti-hydrogen atoms have been captured for the first time and released again in a controlled manner. As part of the ALPHA experiment, a total of 38 anti-hydrogen atoms were held in a magnetic trap for 0.17 seconds, reports the research team in an online publication in the journal "Nature". According to the scientists, this opens the door to an investigation of the properties of anti-hydrogen - and the examination of fundamental symmetries in the so-called standard model of particle physics.
The absence of antimatter in the cosmos is one of the great mysteries of physics. Because symmetries of the laws of nature ensure - at least that is what the Standard Model says - that particles and antiparticles behave in the same way. In the Big Bang, therefore, as much antimatter as matter should have been created - why did this antimatter disappear? The cause could be a violation of the fundamental symmetries. Such a symmetry violation could be noticeable, for example, by differences in the radiation spectrum of hydrogen and anti-hydrogen.
The production of anti-hydrogen has been routine at Cern for several years. But the anti-matter is short-lived and is destroyed again in a very short time by contact with normal matter. In order to be able to study the properties of anti-hydrogen, physicists have to capture the atoms and prevent them from being destroyed. This has now been achieved within the framework of the ALPHA experiment.
The researchers used a special magnetic trap that interacts with the magnetic moment of the atoms. But this trap can only hold atoms at a temperature of 0.5 degrees above absolute zero. "The extreme experimental challenge was to synthesize such cold atoms from plasmas of charged particles with a temperature of 10 to the power of 5 Kelvin", according to the ALPHA researchers, "and to clearly differentiate the rare occurrence of such an atom from background processes". After the interaction of ten million antiprotons and 700 million positrons, only 38 anti-hydrogen atoms landed in the trap - but for more than a tenth of a second. Long enough, according to the scientists, to be able to examine anti-hydrogen in detail in the future. With further improvements to the experiment, the ALPHA team also hopes to increase both the yield of trapped atoms and the retention time of the atoms in the trap.
- Can menstrual blood be tested for HIV
- How does Narcissa Malfoy have blonde hair?
- How do you think about life today
- Are we aware of our consciousness
- How about managing virtual teams
- What is loss of awareness
- Is 5G a LiFi
- What is echo time
- What's your favorite old school album
- How did the Navajo use their food
- Believe in mind control
- Should there be a global postal system
- How do worms find food
- How to say fire in Latin
- Motors are the worst piece of equipment ever invented
- Supports HDMI 2 0 1080p 120Hz
- Why are airplanes designed this way
- Why is Andre Russell Dre Russ called
- How does commercial media advertising work
- What is Fardeen Khan doing these days
- What's your top ten English pop song
- What is working capital 3
- Where is the running place in Ahmedabad
- What if monkeys were gods?