Uncalibrated Solid Sources

Individual 1-Inch Sources

These uncalibrated sources are fabricated in the same manner as the calibrated gamma sources, except in 1-inch diameter (25mm) by 1/4-inch thick (6mm) plastic disks. These nominal activity sources are supplied individually or as a set. Disk sources are identified as alpha, beta, or gamma as shown in the adjacent example. Uncalibrated sources contain ±20% of the stated activity and are routinely compared to calibrated reference standards. These sources are offered in the standard activities listed below. Custom sources of different activities and/or geometries will be quoted on request.

Model No

Radionuclide

Activity

Half-Life

Radiation Type

Ba-133-S

Barium-133

1 µCi

10.5 y

EC, g

Cd-109-S

Cadmium-109

1 µCi

464 d

EC, g

Cd-109-8

Cadmium-109

8 µCi

464 d

EC, g

Cs-137-S

Cesium-137

1 µCi

30.2 y

b, g

Cs-137-5

Cesium-137

5 µCi

30.2 y

b, g

Co-57-S

Cobalt-57

1 µCi

271 d

EC, g

Co-60-S

Cobalt-60

1 µCi

5.27 y

b, g

I-129-S

Iodine-129

0.05 µCi

1.6E7 y

g

Mn-54-S

Manganese-54

1 µCi

312 d

EC, g

Na-22-S

Sodium-22

1 µCi

2.6 y

EC, b+, g

Po-210-S

Polonium-210

0.1 µCi

138 d

a

Sr-90-S

Strontium-90

0.1 µCi

28.5 y

b

Tl204S1

Thallium-204

1 µCi

3.78 y

EC, b

Tl204S10

Thallium-204

10 µCi

3.78 y

EC, b

Zn-65-S

Zinc-65

1 µCi

244 d

EC, b+, g