Table 3 Internal dose rate simulations based on ICP-MS/OES analyses and internal dose rate calculations using DRAC v1.250. The large relative errors (>50%) on the internal dose rate values calculated for samples C-E3824 and C-E3888 are directly due to the low uranium concentrations measured by ICP-MS/OES in the quartz extracts (<0.2 ppm, i.e. close to the detection level; Table 2).

From: First experimental evaluation of the alpha efficiency in coarse-grained quartz for ESR dating purposes: implications for dose rate evaluation

Sample ID

a = 0.07

a = 0.2 (Bartz et al.20)

Internal dose rate (µGy/a)

% of total dose rate

ESR age (ka)

Internal dose rate (µGy/a)

% of total dose rate

ESR age (ka)

C-E3824

66 ± 46

8.0

1250 ± 107

50 ± 30

6.1

1259 ± 96

C-E3886

496 ± 47

29.5

976 ± 96

50 ± 30

4.0

1312 ± 129

C-E3888

47 ± 62

4.1

1289 ± 115

50 ± 30

4.3

1269 ± 97

C-E3891

479 ± 46

34.7

856 ± 63

50 ± 30

5.2

1229 ± 98

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