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Disk Sources, standard
Starting at: $79.00
General Information
All our Radioisotope sources are NRC Exempt 'safety sealed' sources. The radioactive material in the disks cannot be removed or altered - it is fused and part of the plastic/epoxy disk. The disks measure 1" in diameter and just under 1/8" thick.
These radioactive sources are low level and exempt from Nuclear Regulatory Commission (NRC) regulations and licensing. They do not require any sort of special handling or storage, and they can be discarded with normal trash if they are no longer needed.
Since the quantities dealing with radioisotopes are so small (the actual amount of radioactive material in the disks is so small it is invisible to the eye), radioisotopes are sold by the 'microcurie' (uCi). The Curie (Ci) or Microcurie (uCi) is the standard unit of measurement dealing with radioactive isotopes. It is a measurement of radioactivity and is also used to express a quantity of radioactive material. 1 microcurie = 2.22 x 10E6 DPM (disintegrations per minute) or 2,220,000 CPM (counts per minute).
Calibration & Accuracy
All our Disk sources are within 20% of their stated value.
For an additional $130, Gamma sources can be specially manufactured and calibrated against the NIST (National Institute of Standards and Technology) Gamma radiation Standard. These calibrated sources will be accurate to within 5% of stated values and will include a calibration certificate.
Please call us if you wish to order a calibrated Gamma source.
Calibration is only available for gamma sources.
Below is a list of the currently available Disk sources, the type and energy of the radiation they emit, their half-life, and the activity (in microcuries) that are available. There are a variety of isotopes available that emit Gamma or Beta Radiation (or both), but there is only one isotope available emits Alpha radiation, Polonium-210. The Polonium-210 source disk is unique in construction and is an open window design. The source material is mounted in the recess of the plastic disc with an aluminized Mylar window. This design yields excellent transmission of Alpha particles without window losses.
Radioactive isotopes CAN NOT be shipped outside the USA
To ensure the longest half-life possible, all isotopes are fabricated to order and shipped directly to you from our NRC licensed nuclear isotope manufacturing facility in Oak Ridge, Tennessee.
This ensures your radioactive sources are factory-fresh and haven't been sitting on the shelf decaying for months (or years).
ISOTOPE
ACTIVITY
HALF-LIFE
ENERGIES (KeV)
Barium
133
1uCi
10.7 years
Gamma:
81.0, 356.0
Cadmium
109
1uCi
453 days
Gamma:
88.0
Cesium
137
1
uCi
30.1 years
Gamma:
32, 661.6
Beta:
511.6, 1173.2
Cesium
137
5
uCi
30.1 years
Gamma:
32, 661.6
Beta:
511.6, 1173.2
Cesium
137
10
uCi
30.1 years
Gamma:
32, 661.6
Beta:
511.6, 1173.2
Cobalt
57
1uCi
270 days
Gamma:
122.1
Cobalt
60
1uCi
5.27 years
Gamma:
1173.2, 1332.5
Europium
152
1uCi
13.5 years
Gamma:
121.8, 344.3, 1408.0
Manganese
54
1uCi
312 days
Gamma:
834.8
Sodium
22
1uCi
2.6 years
Gamma:
511.0, 1274.5
Strontium
90
0.1uCi
28.5 years
Beta:
546.0
Thallium
204
1uCi
3.78 years
Beta:
763.4
Polonium
210
0.1uCi
138 days
Alpha:
5304.5
Zinc
65
1uCi
244 days
Gamma:
511.0, 1115.5
Add to Cart:
Shipping Weight: 1lbs
Please Choose:
Disc Source
Barium-133 ( $79.00 )
Cadmium-109 ( $79.00 )
Cesium-137 (1 uCi) ( $79.00 )
Cesium-137 (10 uCi) ( $145.00 )
Cesium-137 (5 uCi) ( $115.00 )
Cobalt-57 ( $79.00 )
Cobalt-60 ( $79.00 )
Europium-152 ( $145.00 )
Manganese-54 ( $79.00 )
Polonium-210 ( $79.00 )
Sodium-22 ( $79.00 )
Strontium-90 ( $79.00 )
Thallium-204 ( $79.00 )
Zinc-65 ( $79.00 )
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