MarkI-ZeroPoint wrote: > > “Researchers study unusual and extremely short-lived species of hydrogen” https://phys.org/news/2017-06-unusual-extremely-short-lived-species-hydrogen.html
Interesting find. To make the 5H atom, the researchers used a reaction that removed a single proton from a 6He nuclei produced by the National Superconducting Cyclotron Facility. The 6He (atomic helium-6) target loses a single proton and the remaining proton retains 4 neutrons. The result is short-lived 5H (atomic hydrogen-5). This isotope is not new and has been made from tritium before this paper.
There is a more interesting stable candidate for a species with a mass of 5 amu - it is molecular H5 consisting of two molecules of H2 bound to a core of UDH (ultra dense hydrogen). This molecule could explain many well-known astrological mysteries such as the large amount of hydrogen on certain comets and the Jovion moons.
Molecular H5 would consist of 5 protons in a compact spatial tetrahedron: having been formed from two molecules of normal hydrogen (H2) magnetically bound to one reduced orbital atom of hydrogen (aka the UDH, DDL, pychno ro hydrino). This dense hydrogen allotrope UDH would have a very large magnetic self-field in the range of kiloT (thousands of Tesla) and that field provides long-lived stability, especially in a liquid phase for an allotrope.
If this putative molecule were stable, it would be liquid at mid-low temperatures but much higher than expected; and it should show up in cosmology in cold gas-giants like Jupiter. It could be a liquid at up to 200K. We might find it in the polar regions of Mars. There are some tantalizing clues such as "lakes of liquid methane" on the Jovian moons which seem to contain way too much hydrogen a temperature way above the boiling point. In fact they appears to be mostly hydrogen. Comet tails contain way too much hydrogen as well, since the comet is not cold enough to retain LH.
The tetrahedron is a favored platonic solid. A compact atom of HDH at the core of 4 protons in a tetrahedron would be a candidate for explaining anomalies involving the appearance of liquid hydrogen at temperatures where hydrogen cannot be liquid.
