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Quantum wave in helium dimer filmed for first time
Anyone entering the world of quantum physics must prepare themself for quite a few things unknown in the everyday world: Noble gases form compounds, atoms behave like particles and waves at the same time and events that in the macroscopic world exclude each other occur simultaneously.
In the world of quantum physics, Reinhard Dörner and his team are working with molecules which – in the sense of most textbooks – ought not to exist: Helium compounds with two atoms, known as helium dimers. Helium is called a noble gase precisely because it does not form any compounds. However, if the gas is cooled down to just 10 degrees above absolute zero (minus 273 °C) and then pumped through a small nozzle into a vacuum chamber, which makes it even colder, then – very rarely – such helium dimers form. These are unrivaledly the weakest bound stable molecules in the Universe, and the two atoms in the molecule are co ....

Maksim Kunitski , Maksim Kunitzki , Holger Maschkiwitz , Vitaly Efimov , Sebastian Eckart , Anton Kalinin , Uwe Dettmar , Qingze Guan , Stefan Zeller , Goethe University , Institute For Nuclear Physics , Goethe University Frankfurt , Markus Sch , Till Jahnke , Nature Physics , செபாஸ்டியன் எக்கர்த் , ஸ்டீபன் ஜெல்லேர் , கோதீ பல்கலைக்கழகம் , நிறுவனம் க்கு அணு இயற்பியல் , கோதீ பல்கலைக்கழகம் பிராங்க்ஃபர்ட் , மார்கஸ் ஸ்ச் , வரை ஜஹ்ங்க்கே , இயற்கை இயற்பியல் ,