Radiogenic Heat Production Rock Fraction Calculator
Rock-fraction radiogenic isotope power budget from actual caller epoch-specific abundances and specific powers; no isotope inventory inference.
Description
Radiogenic Heat Production Rock Fraction Calculator: return radiogenic power watts.
Radiogenic power combines isotope abundance with isotope-specific power and the mass containing those isotopes. Rock fraction separates that mass from the whole body.
This tool returns radiogenic power watts. Use the stated units and model convention when interpreting these fields.
When to use this tool
Use this tool when the supplied inputs match the specific operation described above and you need a repeatable result under its stated convention.
- Check the supported input and output contract against an existing calculation or observation.
- Use the complete example to confirm units, selector spelling and result interpretation.
How to use the tool and how it works
- Enter every field in the input table using the stated units and the exact supported selector spelling where applicable.
- Run the tool. Correct input errors before interpreting an output.
- Read the result fields below; use accompanying flags and the stated sign, boundary or model convention when interpreting a number.
Multiply body mass by rock fraction and by the sum of each isotope mass fraction times its specific power. Reject isotope fractions summing above one.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| bodyMassKg | Body mass kg. Kilograms. | Finite number; zero or greater |
| rockFraction | Rock fraction. Fractional units; 0.2 means 20%. | Finite number; from zero to one inclusive |
| isotopeMassFractionsInRock | Isotope mass fractions in rock. | List of finite numbers |
| isotopeSpecificPowerWPerKg | Isotope specific power w per kg. Kilograms. | List of finite numbers |
| Output field | Interpretation |
|---|---|
| result | Object containing the following named result fields. |
| result.radiogenicPowerWatts | Radiogenic power watts; use the stated units and sign convention. |
{
"input": {
"bodyMassKg": 100,
"rockFraction": 0.5,
"isotopeMassFractionsInRock": [
0.1,
0.2
],
"isotopeSpecificPowerWPerKg": [
1,
2
]
},
"output": {
"result": {
"radiogenicPowerWatts": 25
}
}
}Limitations and assumptions
- The supplied powers and fractions must apply to the same epoch and rock composition; decay evolution is not calculated.
- Every declared field is required and unexpected fields are rejected. Numeric inputs must be finite; input errors are distinct from a valid false result or an explicitly qualified output.
- Extremely large inputs and nonfinite or excessively large outputs are rejected. List positions reported by the tool use zero-based indices unless stated otherwise.
Alternative or Complementary methods
Check the underlying observations, units and conventions independently before using the result in a larger workflow. The tools listed below address nearby tasks; compare their inputs and scope before substituting one for this operation.
References
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