Unable to get the initital photon energy while using ISOTOPE card along with source.f

[msabateg (Marta Sabate Gilarte)]

Dear Riya,

Please, have a look at this post that contains all the information you need:

Normalization of results / Source routine with radioactive isotopes

Thank you so much @horvathd, for the detailed explanation. Just two more quires. The output of detect card is counts per primary weight, right ? So if the source strength is 1 micro Ci, then I have to multiply it with 1 micro Ci only, right ? There is no need to divide DETECT output by 2 in case of Co - 60 source, right ? If I use ISOTOPE option along with source.f, then I do not need to specify energy spectrum of source particle in source.f since it will be handled by ISOTOPE card. Then w…

Keep in mind that the energy of the decay photons is set after the source routine is called. In addition, take into account that an isotropic direction sampling overwrites the particle direction set in the source routine.

If you want to check the source energy, you can include a USRBDX card around the source location or implement the mgdraw user routine.

I hope this helps you.

Marta