Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Nuclear
Neutron Flux Calculator
Calculate the number of radioactive atoms produced when a target material is irradiated in a neutron flux, accounting for activation cross-section and decay during irradiation. Used in reactor isotope production and neutron activation analysis.
Fill in the required fields to see your result.
Nuclear
Critical Mass Calculator
Estimate the mass of a uniform-density fissile sphere given its known critical radius and material density. Useful for nuclear engineering coursework, criticality-safety analysis, and reactor physics demonstrations.
Fill in the required fields to see your result.
Key differences
| Neutron Flux Calculator | Critical Mass Calculator | |
|---|---|---|
| Category | Nuclear | Nuclear |
| Inputs required | 5 | 2 |
| Result | Activity Produced (Bq) | Critical Mass (g) |
| What it does | Calculate the number of radioactive atoms produced when a target material is irradiated in a neutron flux, accounting for activation cross-section and decay during irradiation. Used in reactor isotope production and neutron activation analysis. | Estimate the mass of a uniform-density fissile sphere given its known critical radius and material density. Useful for nuclear engineering coursework, criticality-safety analysis, and reactor physics demonstrations. |