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

The measurements of the samples below take into account the background measurements from the background table.
If a measurement is below the background then the upper bound shown is the 90% confidence limit.

NEWS-G Measurements:

Sample Description

Manufacturer

Mass (g)

Live Time (days)

Run Numbers

Counting Dates
(if applicable)

238U from 226Ra

238U from 234Th

235U

232Th

228Ac

137Cs

210Pb

Comments

NEWS-G CW01

400 micron UV/Vis Item No: 6-103288

0.8 g

19.756

180131

Feb 7, 2017

(mBq/kg)

79.42

209.19

<140.78

39.95

35.08

<165.00

62.73

297.70

296.25

1361.25

1365.00

413.75

In-Vacuum multimode fibre optic cable, Polymide Buffer

Accu-Glass Products Inc., Valenca

79 pieces

Feb 27, 2017

(ppb or ppm)

6.43 ppb

16.94 ppb

<11.40 ppb

70.31 ppb

61.74 ppb

<40.59 ppb

15.43 ppb

73.24 ppb

110.57 ppb

33.51 ppb

NEWS-G CW02

400 micron UV/Vis Item No: 6-103289

1.4 g

15.750

180215
18021501

Feb 27, 2017

(mBq/kg)

<134.29

<94.42

31.90

20.32

<103.57

225.58

195.72

<1510.71

750.71

257.14

In-Vacuum multimode fibre optic cable, Aluminum Buffer

Accu-Glass Products Inc., Valenca

79 pieces

Mar 15, 2017

(ppb or ppm)

<10.88 ppb

<7.65 ppb

56.15 ppb

35.76 ppb

<25.28 ppb

55.49 ppb

48.15 ppb

60.81 ppb

20.83 ppb

NEWS-G CW03

Arubis
C10100 –
Cu-OFE (OF-Cu)

23.634 g

14.281

180208
18020801
180213

Oct 5, 2017

(mBq)

0.20

0.29

0.58

0.40

0.07

0.42

0.28

<0.67

<1.06

11.70

5.71

57Co:

Copper Rod

Cleaned with 1% citric acid

Oct 20, 2017

(mBq/kg)

8.28

12.32

24.64

17.00

3.05

2.86

17.80

11.91

<28.39

<44.82

494.89

241.47

0.041 mBq

0.027 mBq

Efficiencies are corrected for self-absorption by the copper using ANGLE4

(ppb or ppm)

0.67 ppb

1.00 ppb

2.00 ppb

1.38 ppb

5.37 ppb

5.03 ppb

4.39 ppb

2.93 ppb

<6.98 ppb

40.09 ppb

19.56 ppb

1.74 mBq/kg

1.16 mBq/kg

NEWS-G CW04

Arubis
C10100 –
Cu-OFE (OF-Cu)

23.724 g

15.475

171101
171106
17110601
17110602
171114
171115

Nov 1, 2017

(mBq)

<0.038

0.14

0.36

0.063

0.070

0.07

0.28

0.22

0.63

<0.63

8.52

5.95

57Co:

Copper Rod

Etched with 5% nitric acid

Nov 17, 2017

(mBq/kg)

<1.62

5.90

15.12

2.65

2.97

2.90

11.61

9.25

26.38

<26.42

359.20

250.67

0.033 mBq

0.027 mBq

Efficiencies are corrected for self-absorption by the copper using ANGLE4

(ppb or ppm)

<0.13 ppb

0.48 ppb

1.23 ppb

4.66 ppb

5.22 ppb

0.71 ppb

2.86 ppb

2.28 ppb

6.49 ppb

29.10 ppb

20.30 ppb

1.37 mBq/kg

1.12 mBq/kg

NEWS-G 005

This sample is also being counted for CUTE

119.1 g

5.400

171201

Dec 1, 2017

(mBq)

<3.72

71.50

41.85

<4.58

2.78

5.64

<5.32

<5.85

38865.30

2067.18

Lead Rod from Marshield

Manufactured by Marshield Ltd

Dec 6, 2017

(mBq/kg)

<31.19

600.29

351.40

<38.46

23.37

47.36

<44.65

<49.08

326324.93

17356.70

Cylinder is 34 mm x 10 mm

Efficiencies are corrected for self-absorption by the lead using ANGLE4

(ppb or ppm)

<2.53 ppb

48.62 ppb

28.46 ppb

<67.69 ppb

5.75 ppb

11.65 ppb

<10.98 ppb

26.43 ppm

1.41 ppm

NEWS-G CW06

Extraordinary Adsorbents

8.9 g

8.928

210426
210429

Apr 26, 2021

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Silver Zeolite

Ag-ETS-10

May 5, 2021

(mBq/kg)

987.90

47.62

2022.00

390.10

49.81

8.22

601.40

43.04

579760.00

30440.00

<127.20

<147.20

(15 g 16-30 mesh)

(ppb or ppm)

80.02 ppb

3.86 ppb

163.78 ppb

31.6 ppb

87.67 ppb

14.46 ppb

147.94 ppb

10.59 ppb

1.87 %

0.1 %

Results:

210Pb:

7Be:

54Mn:

228Ac:

(mBq/kg)

3437.90

2156.00

<174.70

<62.09

398.90

76.70

(ppb or ppm)

278.47 ppb

174.64 ppb

98.13 ppb

18.87 ppb

NEWS-G CW07

Extraordinary Adsorbents

7.2 g

20.083

210709

Jul 9, 2021

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Sodium Zeolite Absorbent

Na-ETS-10

Jul 29, 2021

(mBq/kg)

204.90

32.13

1473.00

390.10

15.45

7.42

48.00

31.02

5113706.08

14163.44

27.79

57.30

178.20

137.90

(16-30 Mesh)

(ppb or ppm)

16.6 ppb

2.6 ppb

119.31 ppb

31.6 ppb

27.19 ppb

13.07 ppb

11.81 ppb

7.63 ppb

16.52 %

0.05 %

Results:

210Pb:

7Be:

54Mn:

228Ac:

(mBq/kg)

5380.00

2560.00

<162.60

<89.79

<74.57

(ppb or ppm)

435.78 ppb

207.36 ppb

<18.34 ppb

In Progress and To Be Measured:

Sample Description

Manufacturer

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)

(ppb or ppm)

Results:

210Pb:

7Be:

54Mn:

228Ac:

57Co

58Co

(mBq/kg)

(ppb or ppm)