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Where can I find detailed information on the gamma background from the U238 decay chain?

Edit: Thank you for your replies. I need to find all the branching ratios and extract information of all the excited states of the daughter isotopes.

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    $\begingroup$ How detailed do you want? For each decay, the Evaluated Nuclear Structure database (at bnl.gov) has the info, including branching ratios. Tedious to track through all paths of the chain, but doable. $\endgroup$ – Jon Custer Mar 3 at 19:22
  • $\begingroup$ This Korean website is easy to use and reasonably comprehensive. $\endgroup$ – Farcher Mar 3 at 19:30
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    $\begingroup$ ::Searches the walls for poster to point at:: ... ::realizes he's not at the kind of place that has those posters anymore:: $\endgroup$ – dmckee Mar 3 at 19:35
  • $\begingroup$ en.wikipedia.org/wiki/… plus ENSDF should do it, but would be a bit of work for you to comb through. $\endgroup$ – Ben Crowell Mar 3 at 19:45
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    $\begingroup$ Oi, people! There really are standard charts for these things and you really don't need to go back to the raw data in the ENDF or even a table of the isotopes. I really have worked in places with these thing on posters on the wall. Here's one source for the standard charts: metadata.berkeley.edu/nuclear-forensics/Decay%20Chains.html (which I found by typing "thorium decay chain" into google; the other really commonl chart is the "radon decay chain"). $\endgroup$ – dmckee Mar 3 at 19:58

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