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‘The mystery of the neutron lifetime’ + diverse (quantum)elektrificerende elektron-ontdekkingen

7 September 2020 15:30

Sorry voor het (quantum)elektrificerende elektron-ontdekkingen koeterwaals om de twee aanvullende artikelen mee samen te vatten.

Nine seconds. An eternity in some scientific experiments; an unimaginably small amount in the grand scheme of the universe. And just long enough to confound nuclear physicists studying the lifetime of the neutron.

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But how long the neutron takes to fall apart presents a bit of a mystery. One method measures it as 887.7 seconds, plus or minus 2.2 seconds. Another method measures it as 878.5 seconds, plus or minus 0.8 second. At first, this difference seemed to be a matter of measurement sensitivity. It may be just that. But as scientists continue to perform a series of ever-more-precise experiments to evaluate possible issues, the discrepancy remains.

https://phys.org/news/2020-09-mystery-neutron-lifetime.html

 

Elektrificerende elektron-ontdekkingen >

Researchers find unexpected electrical current that could stabilize fusion reactions

Electric current is everywhere, from powering homes to controlling the plasma that fuels fusion reactions to possibly giving rise to vast cosmic magnetic fields. Now, scientists at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) have found that electrical currents can form in ways not known before. The novel findings could give researchers greater ability to bring the fusion energy that drives the sun and stars to Earth.

https://phys.org/news/2020-09-unexpected-electrical-current-stabilize-fusion.html

New evidence that the quantum world is even stranger than we thought

New experimental evidence of a collective behavior of electrons to form “quasiparticles” called “anyons” has been reported by a team of scientists at Purdue University.

Anyons have characteristics not seen in other subatomic particles, including exhibiting fractional charge and fractional statistics that maintain a “memory” of their interactions with other quasiparticles by inducing quantum mechanical phase changes.

https://phys.org/news/2020-09-evidence-quantum-world-stranger-thought.html


 
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