https://archive.org/details/jresv38n6p665
it's in this article for example
I asked this question as I was reading about shieldings in PET departments, where they suggest lead/concrete ratio 12-15, while ratio for 150 keV X-Ray is 80... (These are example regulations from my country).
Ok, I did some thinking ;) Is it because for low Z materials, photons with higher energy interacts with absorber almost by Compton Effect only? And Compton is independant of atomic number.
Concrete for example - you need less concrete to obtain the same lead equivalent for photon energy 500 keV than for 200 keV. What is the reason for this?
Hello,
I'd like someone to help me understand, how can I tell from available data, what is the approximate share of different decay modes, for some given nuclide activity.
Let's take 90Y for instance. It's known for being beta-emitter, but it emits gammas and X-rays as well. How to...