Gamma and x-ray decay in different series

[DetectiveT]

Is there any gamma decay or x-ray decay in Actinium series, Uranium series or Thorium series? On Wikipedia, it only shows alpha and beta decay, does it mean high energy photon decay (gamma or x-ray) exists in each process? Thank you!

https://en.wikipedia.org/wiki/Decay_chain#Actinium_series

 

[gleem]

There is almost always some gamma or x-ray radiation associated with a nuclear decay. Exceptions that comes to mind are certain isotopes of C, Si, P, S.

 

[mfb]

Gamma decays don't change the isotope, so they are not listed in the decay chains.
As gleem said, most decays listed there can lead to an excited state of the daughters, with a gamma decay afterwards.

 

[DetectiveT]

Thank you very much, this verified my thought, thanks!