DRAC — Data Tables

• Home
• User Guide
• Calculator
• Data Tables
• News
• Who we are
• References

A list of the different data sets available for use in DRAC:

1. Radionuclide conversion factors: View, Download CSV
2. Grain size attenuation factors for alpha dose rates: View, Download CSV
3. Grain size attenuation factors for beta dose rates: View, Download CSV
4. Etch depth attenuation factors: View, Download CSV
5. Water content attenuation factors: View, Download CSV
6. F, J and H parameters used for cosmic dose rate calculation: View, Download CSV
7. Gamma dose scaling: View, Download CSV

1) Conversion factors

The alpha, beta and gamma dose (Gy.ka^-1) produced per unit of the parent radionuclide: for 1 ppm U, 1 ppm Th, 1 ppm Rb and 1% K.

DRAC accepts radionuclide concentrations in ppm (U, Th, Rb) and % (K) only. Concentrations in other units, such as Bq.kg^-1, should be converted to ppm/% prior to using DRAC.

	AdamiecAitken1998	Guerinetal2011	Liritzisetal2013	Cresswelletal2018
Uα	2.78	2.795	2.793	2.79
δUα	0.0109	0.011	0.011	0.02
Thα	0.732	0.7375	0.7375	0.738
δThα	0.0026	0.0026	0.0026	0.004
Uβ	0.146	0.1457	0.1459	0.142
δUβ	0.0004	0.0004	0.0004	0.002
Thβ	0.0273	0.0277	0.0275	0.028
δThβ	0.0009	0.0009	0.0009	0.001
Kβ	0.782	0.7982	0.8011	0.835
δKβ	0.0071	0.0073	0.0073	0.008
Rbβ	0.00038	0.00037	0.00037	0.00037
δRbβ	8.216E-6	8.0E-6	8.0E-6	8.0E-6
Uγ	0.113	0.1116	0.1118	0.112
δUγ	0.0002	0.0002	0.0002	0.001
Thγ	0.0476	0.0479	0.0481	0.0489
δThγ	0.0002	0.0002	0.0002	0.0003
Kγ	0.243	0.2491	0.2498	0.248
δKγ	0.0047	0.0048	0.0048	0.003

Download CSV ↑ Back to top

Full references for each of the datasets can be accessed via the References page.

We invite authors who calculate new and/or updated datasets for dose rate calculation to submit their datasets for use in DRAC. If you are interested, please contact us.