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Table 13 Model-derived production and scavenging rates (atoms kg−1 s−1) for radium in the Bruchsal geothermal system
From: Water–rock interactions in the Bruchsal geothermal system by U–Th series radionuclides
Water–rock interaction processes | 226Ra | 228Ra | 223Ra | 224Ra |
|---|---|---|---|---|
Supply from alpha-recoil in consideration of the diffusional flux | ||||
P*r | 244 | 56 | 0.7 | 10 |
Production from desorption | ||||
Pd | 1268 | 1 | 0.0 | 0.0 |
Production from dissolution | ||||
Pw | 72,391 | 102 | 0.0 | 0.0 |
Scavenging from adsorption | ||||
Sa | 1276 | 2 | 0.0 | 0.0 |
Scavenging from precipitation | ||||
Sp | 72,585 | 141 | 0.0 | 0.0 |
Supply by water flow | ||||
Q | − 13 | 0.0 | 0.0 | 0.0 |
Steady-state activity | ||||
ARa | 29 | 16 | 0.7 | 10 |