Hi there, I am new to openmc and I am wondering if you can simulate the decay of an isotope with time in openmc, I am looking for gamma decay specifically, I also want to calculate the dose at a certain cell in the model using photon transport, the way I thought of doing so is to get the total heat…

Right now we don’t have the ability to simulate the natural decay of isotopes to get a gamma source, although this is something that @pshriwise and I have an interest in developing eventually. At present, if you wanted to do such a calculation, you would have to manually define a photon source that …

Thank you Paul, I’ve run the simulation and it’s given me the value of the flux, I want to ask what is the unit of this flux is it eV/cm2*s because I didn’t understand this unit ( particle-cm per source particle) in the documentation ?

Please see the user’s guide section on normalization of tally results .

Thank you Paul, I want to ask how can I extract the value of the dose from the tally?

This tally will have only a single value. A quick, dirty way is to look at the tallies.out file. If you want to programmatic extract it, the following would work (assuming you only have a single tally): with openmc.StatePoint(statepoint_filename) as sp: t = sp.get_tally() dose_value = t.mea…

Hi all, I am a little confused about these units. After the flux value is found in particles/second, can we calculate the dose value in microsievert/hour in this program? Thank you

@A66 This was described in a previous post: [image] dose calculation User Support Hi @Shimwell and @lorenzo , Please correct me if I’m wrong, but my understanding is that using the EnergyFunctionFilter with dose_coefficients does give units of [pSv-cm^3/source_particle], …

Decay Chains simulation and dose calculations

User Support

paulromano March 22, 2022, 12:20pm 9

@A66 This was described in a previous post:

Topic		Replies	Views
Openmc.data.dose_coefficients User Support	3	857	September 4, 2025
dose calculation User Support	20	3818	March 24, 2025
Unit for dose calculation User Support	2	110	March 24, 2025
Calculating Dosage? User Support	1	748	March 28, 2022
Conversion of tallies from detector into dose rate User Support	2	176	June 17, 2025

Decay Chains simulation and dose calculations

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