Here is some musing on the subject of dense hydrogen (UDH)... this time
based on the realization that there could be more to the following
astrophysics paper than meets the eye: "H4O and other hydrogen-oxygen
compounds at giant-planet core pressures" by Zhang et al.
http://militzer.berkeley.edu/papers/Shuai_Zhang_H4O.pdf
In this paper, it is shown that hydrogen and water under intense
pressure such as found on large planets, possibly Saturn and Jupiter,
can form the unusual molecule H4O. Despite the odd (apparent) oxidation
state, the molecule could be ultra-stable, especially in the event that
FQHE electrons have formed as part of the pressurized reaction. (the
authors do NOT go that far and do not mention FQHE).
In fact FQHE electrons are a two dimensional construct which have a
fraction of the elemental charge, such that 4 could fill the oxygen
orbitals maximally if they were to become stable in a covalent state as
bound quasiparticles (two at 1/3 and 2 at 2/3).
If H4O is possible, as claimed, then it is also arguable that another
route to the species is available - without the necessity for intense
overall pressure. Dense hydrogen which has been formed on a catalyst
(Holmlid effect) is already beyond the need for added compaction to be
considered 2D and thus have fractional charge. Thus UDH could form a
similar type of heavy water under moderate pressure, perhaps even
naturally in the deep oceans. A dense hydrogen species as described by
Holmlid/Mayer/Mills or as an amalgam of their theories - could then
displace protons of a water molecule to form H4O and if the binding
energy is higher than expected, the AMU of the species is even closer to
D2O than expected.
IOW - if the H4O molecule is possible in theory - shouldn't it have
shown up in the past - such as in industrial production of heavy water?
Maybe, but consider: although the atomic mass would be similar to heavy
water, there should be a smaller detectable difference with greater
binding, so H4O may have escaped detection.
In short, if the ionization potential of H4O were very high, then
perhaps it does escape detection and a percentage is found in all heavy
water. This would help to explain a number of anomalies including excess
heat without radiation.