# Reading the total atomic density (TOT\_ADENS) of fission products in Openmc
**URL:** https://openmc.discourse.group/t/reading-the-total-atomic-density-tot-adens-of-fission-products-in-openmc/4025
**Category:** User Support
**Created:** [March 9, 2024, 2:33pm UTC](https://openmc.discourse.group/t/reading-the-total-atomic-density-tot-adens-of-fission-products-in-openmc/4025 "2024-03-09T14:33:42Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@emilmammadzada](https://openmc.discourse.group/u/emilmammadzada)
#### Post date: [March 9, 2024, 2:33pm UTC](https://openmc.discourse.group/t/reading-the-total-atomic-density-tot-adens-of-fission-products-in-openmc/4025/1 "2024-03-09T14:33:42Z")
@paulromano@Shimwell How can I read the total atomic density of fission products for mixed fuels from the output file in OpenMC?
```auto
_time, u5 = results.get_atoms("1", "U235")
```
In this depletion example, I think it does not read the total atomic density.
---
### Author:  [@emilmammadzada](https://openmc.discourse.group/u/emilmammadzada)
#### Post date: [March 12, 2024, 7:35pm UTC](https://openmc.discourse.group/t/reading-the-total-atomic-density-tot-adens-of-fission-products-in-openmc/4025/2 "2024-03-12T19:35:19Z")
@paulromano @Shimwell @pshriwise