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.

DEAP 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

DEAP CW01

Prepared On: 140904

3.1 g

6.847

140908

Sep 8, 2014

(mBq/kg)

38.99

+/-

92.99

<55.47

57.941

27.941

354.31

64.13

49.06

139.04

<969.36

419.36

193.55

Acrylic Vaporization Sample

Sep 15, 2014

(ppb or ppm)

3.16 ppb

7.69 ppb

<4.49 ppb

101.98 ppb

49.18 ppb

87.16 ppb

15.78 ppb

12.07 ppb

34.20 ppb

DEAP CW02

Prepared On: 140826

0.3 g

21.535

150708
150729
17072905

Jul 8, 2015

(mBq/kg)

<616.67

466.18

288.16

<93.33

196.91

390.32

1497.00

797.65

<5106.67

22833.33

1986.67

Acrylic Vaporization Sample

Jul 30, 2015

(ppb or ppm)

<49.85 ppb

37.76 ppb

23.34 ppb

<164.27 ppb

48.44 ppb

96.02 ppb

368.26 ppb

196.22 ppb

1.85 ppm

0.16 ppm

DEAP CW03

Solder used for 22Na source encapsulation

1.4 g

8.083

151028

Oct 28, 2015

(mBq/kg)

<366.43

393.36

418.39

<69.29

<174.29

547.94

599.52

<2582.14

152650.00

8272.86

Solder

Nov 5, 2015

(ppb or ppm)

<29.68 ppb

31.86 ppb

33.89 ppb

<121.94 ppb

<42.87 ppb

134.79 ppb

147.48 ppb

12.36 ppm

0.67 ppm

DEAP CW04

Foil is 0.0015” thick

1.5 g

32.097

151115
151125
151209
151212
15121201
151217

Nov 15, 2015

(mBq/kg)

164.23

92.80

<50.89

7.09

13.60

<117.86

<708.86

<539.29

513.57

168.57

Copper Foil for 22Na Inner Encapsulation

Dec 18, 2015

(ppb or ppm)

13.30 ppb

7.52 ppb

<4.14 ppb

12.47 ppb

23.93 ppb

<28.99 ppb

<174.13 ppb

41.60 ppb

13.65 ppb

DEAP CW05

Prepared by Joshua Bonatt on 23 Aug 2016

---

7.823

160915
160916
160919
190920

Sep 15, 2016

(mBq)

0.38

0.25

0.15

0.24

0.075

0.048

0.18

0.16

<0.80

<3.74

627.97

32.59

Acrylic Vaporization Sample

Labelled “Efficiency 4”

Sep 23, 2016

DEAP CW06

Prepared by Joshua Bonatt on 02 Nov 2016

---

10.792

161103 161104 161111 16111101

Nov 3, 3016

(mBq)

0.28

0.24

<0.098

0.117

0.044

2.79

0.30

0.21

0.43

<2.33

426.29

22.16

Acrylic Vaporization Sample

Labelled “Efficiency 5”

Nov 14, 2016

DEAP CW07

Prepared by Joshua Bonatt on 03 Nov 2016

---

17.716

161114

Nov 14, 2016

(mBq)

0.25

0.17

<0.124

0.051

0.029

0.06

0.12

0.26

0.29

1.21

6.26

0.60

Acrylic Vaporization Sample

Labelled ”Blank”

Dec 2, 2016

DEAP CW08

Silver Zeolite: Ionex Type AG400

6.8 g

13.808

201204

Dec 4, 2020

(mBq/kg)

3783.00

215.80

2066.00

187.50

216.40

11.78

3515.00

213.20

1686.00

182.50

<508.60

742.57

163.20

Silver Zeolite

Lot #: 1911002-0062
Molecular Products Inc.

The sample is also counted on the PGT detector as DEAP 138

Dec 18, 2020

(ppb or ppm)

306.42 ppb

17.48 ppb

167.35 ppb

15.19 ppb

380.86 ppb

20.73 ppb

864.69 ppb

52.45 ppb

414.76 ppb

44.9 ppb

60.15 ppb

13.22 ppb

In Progress and To Be Measured:

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

(ppb or ppm)