Technology Scientists find neutrinos from star fusion for the first time

23:25  26 november  2020
23:25  26 november  2020 Source:   engadget.com

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Scientists from the international collaboration Borexino announced the first observation of neutrinos from reactions of the carbon-nitrogen cycle in the Sun. This experimentally confirms the theoretical concepts of the secondary cycle of thermonuclear fusion in massive stars . The research results are

Scientists have pointed out over the years that studying neutrinos from the sun could ultimately lead to a better understanding of its mechanics— one specific goal is to find out how much of the sun is made up of elements that are heavier than helium and hydrogen. The neutrino observations have not

Researchers have effectively confirmed one of the most important theories in star physics. NBC Newsreports that a team at the Italian National Institute for Nuclear Physics has detected neutrinos traced back to star fusion for the first time. The scientists determined that the elusive particles passing through its Borexino detector stemmed from a carbon-nitrogen-oxygen (CNO) fusion process at the heart of the Sun.

shape: Neutrino detection in INFN Gran Sasso Laboratories' facility Neutrino detection in INFN Gran Sasso Laboratories' facility

This kind of behavior had been predicted in 1938, but hadn’t been verified until now despite scientists detecting neutrinos in 1956. Borexino’s design was crucial to overcoming that hurdle — its “onion-like” construction and ongoing refinements make it both ultra-sensitive and resistant to unwanted cosmic radiation.

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Neutrinos emitted as part of these processes provide a spectral signature allowing scientists to distinguish those Pocar says neutrinos are really the only direct probe science has for the core of stars , including the CNO fusion neutrinos from the sun observed for the first time . Jun 25, 2020.

Neutrinos from a long-theorized nuclear fusion reaction in the sun have been definitively observed, confirming the process that powers most stars . The detection caps off decades of study of the sun’s neutrinos by the Borexino project, and reveals for the first time the main nuclear reaction that most

It’s a somewhat surprising discovery, too. CNO fusion is much more common in larger, hotter stars. A smaller celestial body like the Sun only produces 1 percent of its energy through that process. This not only confirms that CNO is a driving force behind bigger stars, but the universe at large.

That, in turn, might help explain some dark matter, where neutrinos could play a significant role. Scientist Orebi Gann, who wasn’t involved in these findings, also told NBC that an asymmetry between neutrinos and their relevant antiparticles might explain why there isn’t much known antimatter in the universe. To put it another way, the findings could help answer some of the most basic questions about the cosmos.

Fusion energy device sets a record by running for 20 seconds .
Most technology creators would consider a seconds-long test a bitter disappointment, but it’s a rousing success in the world of fusion energy. According to Phys.org, the Korea Superconducting Tokamak Advanced Research (KSTAR) device recently set a world record by maintaining its plasma at a super-hot 180 million degrees Fahrenheit for 20 seconds. That may not sound like much, but no previous fusion machine lasted for more than 10 seconds in those conditions — even KSTAR held out for just eight seconds in 2019.

usr: 3
This is interesting!