I copied all the isotope tables from Wikipedia, and periodictable.com into one file so I could analyse the data. Its 2.8MB so too big to attach, but you can have a copy if you ask. I was going to attach the “missing bit” from the previous posting, but the pdf is too big, and it wont let me attach a doc. Here is a summary of the findings.

• I have taken the 2,606 isotopes up to Atomic number 208, and sorted them by decay mode. Of these only 194 are fully stable and 2,173 are beta decays

• There is only one fully stable “Z” isotope for a given atomic number “A”.

• There are no stable isotopes above 208Pb. For any given Atomic number, most decays are either beta minus resulting in an increase in the Z number, or beta plus (or electron capture)resulting in a decrease in the Z number both converging on the unique Z number for the stable A number.

• 2Bminus and 2Bplus decays are from semi-stable long half life Isotopes, which always result in the stable Z of that atomic number. This is always accompanied by a single beta decay from the Z+/- 1 isotope.

• All other decays are either to isotopes in another “A” number B chain or directly to other stable isotopes.

• Bminus and Bplus decay chains are not symmetrical

• The pattern of decay energies is different for Fermions and Bosons.

• The “curve of stability” can be split into 3, one for fermions, one for boson numbers divisible by 4, and one for other even numbers.

Which gives rise to some questions

• Bminus and Bplus decay chains are not symmetrical. Question - electrons and positrons are supposed to be identical with opposite charge and spin. The data suggests there is a subtle difference in the way they behave in decay?

• Nuclei have two classes: Fermions with fractional spins, and Bosons with 0 or whole number spins. The pattern of decay energies is different for Fermions and Bosons, but analysis shows that the Bosons have two classes, Atomic numbers divisible by 4, and other even numbers, leading to three “curves of stability”. Is this significant?

• Where there is more than one isotope with the same Z number, it seems difficult to identify the difference apart from the mass. Is there an identifiable difference eg in the crystal structure, and /or in the spectral signature?

There may be more questions, but I haven’t finished stirring the data.

Graham