Further furthermore if 90% of main sequence stars end up as white dwarves when they have finished hot fusion, according to their limits, why don't they go on burning in a CF manner so that the sky is full of UV,Xray or even gamma ray dwarves? As the temperature built up again thermal runaway would occur as radiation would be limited by the small size and SB law so that hot fusion would occur again and a supernova would result. In that case all main sequence stars would end up as neutron stars or black holes and the sky would be littered with them.
On Thu, Dec 19, 2013 at 10:03 AM, John Franks <[email protected]> wrote: > Furthermore, > > The density of white dwarves is some 10^6g/cm^3 compared to water at > 1g/cm^3. This would mean that the inter-nuclei spacing was 1/100 of water. > > Now Muon catalyzed fusion > http://en.wikipedia.org/wiki/Muon-catalyzed_fusion which we know works > brings the nuclei 1/207 of the distance with electrons. It happens at an > appreciable rate. > > since white dwarves are not more luminous than a black body radiating away > with the Stefan Boltzmann law, we can conclude that there are no nuclear > reactions AND that is the limit of what can be done with ordinary matter. > > In short, if you can't even get in the ball park of white dwarf matter in > the lab, what chance in hell have you of even approaching muon catalysed > reaction rates? > If CF is real, why doesn't it occur in white dwarves with their high temperature and pressure electron degenerate matter? After all, that is the belief system of CF in cramming these lattices with hydrogen. http://en.wikipedia.org/wiki/White_dwarf "The material in a white dwarf no longer undergoes fusion reactions, so the star has no source of energy, nor is it supported by the heat generated by fusion against gravitational collapse." http://en.wikipedia.org/wiki/Electron-degenerate_matter#Degenerate_gases "Under high densities the matter becomes a degenerate gas when the electrons are all stripped from their parent atoms. In the core of a star, once hydrogen burning in nuclear fusion<http://en.wikipedia.org/wiki/Nuclear_fusion> reactions stops, it becomes a collection of positively charged ions<http://en.wikipedia.org/wiki/Ion>, largely helium and carbon nuclei, floating in a sea of electrons, which have been stripped from the nuclei. Degenerate gas is an almost perfect conductor of heat and does not obey the ordinary gas laws. White dwarfs<http://en.wikipedia.org/wiki/White_dwarfs> are luminous not because they are generating any energy but rather because they have trapped a large amount of heat."
