Template talk:Thorium series

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There seems to be an error: 222 is not 4n.

Another thing, could the negative energies be explained? Where does the energy come from?--Patrick 10:17, 23 December 2005 (UTC)

Yes, the energies are absolutely incorrect. And the row with 222Rn should be deleted. --V1adis1av 17:48, 23 December 2005 (UTC)

The energies previously written in the table were the mass excesses (below: M.E.). They are related to the energies released in decay. For beta decay, the released energy is simply the difference between M.E. of mother and daughter nuclei. For alpha decay, the released energy is M.E.(mother)-M.E.(daughter)-M.E.(⁴He), where M.E.(⁴He)=2.425 MeV. I also corrected other mistakes in the table. --V1adis1av 18:28, 23 December 2005 (UTC)

Thanks.--Patrick 00:23, 24 December 2005 (UTC)

[edit] Julian year?

I removed the word "Julian". The difference between the Gregorian and the Julian year amounts to only 0.002 %, and there is hardly any half life (> 1 a) measured so accurately that the difference would matter. HPaul (talk) 20:12, 27 January 2008 (UTC)