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Physics
High Energy, Nuclear, Particle Physics
Four neutrons form a transient isolated entity - a tetraneutron?
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[QUOTE="Astronuc, post: 6655332, member: 15685"] I was reading another article when this headline from June 22 caught my attention. [HEADING=2]Collisions hint that four neutrons form a transient isolated entity[/HEADING] [URL]https://www.nature.com/articles/d41586-022-01634-x[/URL] An experiment firing helium-8 nuclei at a proton target has generated evidence that four neutrons can exist transiently without any other matter. [I]But doubts remain[/I], because the existence of such systems is at odds with theory. Unfortunately, one has to subscribe or otherwise have access through one's institution. I haven't read the paper yet. Helium-8 is already pretty exotic. Meanwhile, there is an apparently related paper with open access. [HEADING=2]Observation of a correlated free four-neutron system[/HEADING] [URL]https://www.nature.com/articles/s41586-022-04827-6[/URL] I've noticed relate threads on PF. In 2010, there was apparently no evidence of a tetraneutron system, but by 2016, there was some possible indications. Now apparently, there are claims of such as system. Edit/update: I was reading a post in Nuclear Engineering which included a Nature article. [URL]https://www.physicsforums.com/threads/what-is-the-ignition-cliff.1017073/[/URL] [/QUOTE]
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Physics
High Energy, Nuclear, Particle Physics
Four neutrons form a transient isolated entity - a tetraneutron?
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