Some Useful Information Concerning the results:
The Conversion factors for the primordial nuclides are given by: 1 Bq 238U/kg = 81 ppb U (81 x 10-9 gU/g) The 238U decay chain gammas used are: 234Th: 63.29 and 92.59 keV
226Ra: 186.1 keV
214Pb: 295.21 and 351.92 keV
214Bi: 609.31, 1120.29, 1764.49 and 2204.21 keV
The relationships are valid for any daughters in the 238U, 235U or 232Th chain only if the chain is in equilibrium. 1 Bq 232Th/kg = 246 ppb Th (246 x 10-9 gTh/g) The 232Th decay chain gammas used are: 212Pb: 238.63 and 300.09 keV
208Tl: 277.371, 583.19, 860.557 and 2614.53 keV,
228Ac: 209.253, 338.320, 463,004, 911.21, 964.766 and 968.971 keV
1 Bq 40K/kg = 32300 ppb K (32300 x 10-6 gK/g) The 40K decay chain gamma used is: 40K: 1460.83 keV
1 Bq 235U/kg = 1.76 ppm U (1.76 x 10-6 gU/g) The 235U decay chain gammas used are: 235U: 143.76, 163.33 and 205.31 keV
Completed Sample Measurements for the Lively Detector
COSINUS Measurements:




























Sample Description
Mass (g) Live Time (days) Run Numbers Counting Dates
(if applicable)























COSINUS L01 Beaker made from silicon, Nr. 6 15.714 g 21.846 241024
241030
241113
Oct 24, 2024 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Gorm Si-Beaker



Nov 15, 2024 (mBq/kg) <1.61

56.60 +- 117.10 4.58 +- 2.58 <7.81

70.12 +- 71.93 <3.11

<4.92








(ppm / ppb / ppt) <0.13 ppb

4.58 ppb +- 9.49 ppb 8.06 ppb +- 4.54 ppb <1.92 ppb

2.26 ppm +- 2.32 ppm














Results: 210Pb:
7Be:

54Mn

228Ac:
















(mBq/kg) 2999.80 +- 4250.00 <42.88

<3.18

24.33 +- 15.41

















(ppm / ppb / ppt) 242.98 ppb +- 344.25 ppb





5.99 ppb +- 3.79 ppb











In Progress Sample Measurements for the Lively Detector
Runs in Progress:




























Sample Description
Mass (g) Live Time (days) Run Numbers Counting Dates
(if applicable)























Next Sample




Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments






(mBq/kg)



























(ppm / ppb / ppt)







.




















Results: 210Pb:
7Be:

54Mn

228Ac:
















(mBq/kg)





























(ppm / ppb / ppt)