Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Nuclear
Neutron Flux Calculator
Calculate the neutron reaction rate in a nuclear material given neutron density, velocity, microscopic cross-section, and target atom density. Used in reactor physics, shielding design, 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 | 4 | 2 |
| Result | Reaction Rate (reactions/cm³/s) | Critical Mass (g) |
| What it does | Calculate the neutron reaction rate in a nuclear material given neutron density, velocity, microscopic cross-section, and target atom density. Used in reactor physics, shielding design, 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. |