Calculator Inputs
Dose Trend Plot
This chart shows adjusted dose against changing input quantity.
Example Data Table
| Case | Input Quantity | Factor | Duration | Occupancy | Shielding | Adjusted Dose |
|---|---|---|---|---|---|---|
| Lab Survey A | 8 mGy | 0.75 mSv/mGy | 1.0 | 1.0 | 1.0 | 6.00 mSv |
| Barrier Study B | 12 mGy | 0.60 mSv/mGy | 1.2 | 0.5 | 0.7 | 3.02 mSv |
| Control Room C | 5 mGy | 0.90 mSv/mGy | 0.8 | 0.4 | 0.6 | 0.86 mSv |
| Open Area D | 18 mGy | 0.55 mSv/mGy | 1.5 | 1.0 | 0.9 | 13.37 mSv |
Formula Used
Adjusted Dose = Input Quantity × Conversion Factor × Duration Multiplier × Occupancy Factor × Shielding Factor
Conversion Factor = Known Dose ÷ (Input Quantity × Duration Multiplier × Occupancy Factor × Shielding Factor)
Input Quantity = Known Dose ÷ (Conversion Factor × Duration Multiplier × Occupancy Factor × Shielding Factor)
This model supports dose estimation, reverse factor solving, and back-calculation of source quantity. It is useful for screening studies, teaching examples, and quick sensitivity reviews.
How to Use This Calculator
- Select the required calculation mode.
- Enter the radiation quantity or known dose value.
- Add the conversion factor when available.
- Set duration, occupancy, and shielding multipliers.
- Choose the quantity and dose units.
- Enter an uncertainty percentage for range estimates.
- Click calculate to view the result above.
- Export the output table as CSV or PDF.
FAQs
1. What does a dose conversion factor represent?
A dose conversion factor links a measured radiation quantity to an estimated dose quantity. It helps convert values like kerma, fluence, or absorbed dose into a target dose estimate.
2. Why are occupancy and shielding included?
Occupancy and shielding change real exposure conditions. Occupancy reflects time spent in the area. Shielding reflects attenuation or reduction caused by barriers, walls, panels, or protective materials.
3. Can this calculator solve for an unknown factor?
Yes. Switch to the conversion factor mode. Enter the known dose, input quantity, and adjustment multipliers. The tool then estimates the factor needed to match those conditions.
4. Is this suitable for regulatory reporting?
This tool is best for screening, education, and preliminary checks. Formal regulatory work should use validated methods, source-specific coefficients, documented assumptions, and qualified professional review.
5. What uncertainty percentage should I enter?
Use a value that reflects measurement and modeling uncertainty. Common screening examples use five to twenty percent, but the appropriate range depends on instrumentation, geometry, and source knowledge.
6. What happens when shielding is below one?
A shielding factor below one reduces the adjusted dose. For example, a factor of 0.4 means the barrier allows only forty percent of the unshielded contribution.
7. Can I use different units here?
Yes. The interface lets you label common quantity and dose units. Keep factor units consistent with the selected quantity and dose units for meaningful results.
8. Why does the chart change with the result?
The plot uses the current factor and adjustment settings. It shows how the estimated dose changes as the input quantity increases around the calculated baseline.