Disc & Laminate Sources


Disc sources are available in 1" and 2" diameter plastic disc with the 1" being standard and other sizes on special order.

The alpha source is of open window construction with the source material bonded to the surface of a silver foil mounted in the recess of the plastic disc. This design yields excellent emission of alpha particles without window losses.

Plastic laminates provide a convenient alternative packaging being easy to handle and store. The standard laminates have a transmission window of  0.005" and produce minimum attenuation for photons and higher energy beta particles.

Radioisotope sources are available individually or packaged as sets of three, five, and eight in convenient storage boxes. These items are uncalibrated and of nominal activity to provide a safe, yet inexpensive supply of radioactive material for educational and commercial use. When shipping or storing multiple gamma sources, to reduce reduce radiation levels we recommend using Lead Shields.

Standard individual sources for alpha, beta and gamma emissions are available in the following isotopes.

 

 

 

 

Isotope

Activity

Half-life

Emissions

Energies (keV)

10.7 years

Gamma

81.0, 276.3, 303.7, 355.9, 383.7

Ba133S1

1uCi.

C14S10

10uCi.

5730 years

Beta

β156.5

Cd109S1

1uCi

453 days

Gamma

88.0

Co57S1

1uCi.

270 days

Gamma

122.1, 136.4

Co60S1

1uCi.

5.27 years

Gamma, Beta

1173.2, 1332.5, β317.9

Cs137S.2

0.2uCi.

30.1 years

Gamma, Beta

32, 661.6, β511.6, β1173.2

Gamma, Beta

32, 661.6, β511.6, β1173.2

Cs137S.5

0.5uCi.

30.1 years

Gamma, Beta

32, 661.6, β511.6, β1173.2

Cs137S1

1uCi.

30.1 years

Gamma, Beta

32, 661.6, β511.6, β1173.2

Cs137S5

5uCi.

30.1 years

"Unknown"

32, 661.6, 1115.5

Cs/ZnS

1uCi.

Mixed

Eu152S1

1uCi.

13.5 Years

Gamma, Beta

Multiple energies

Fe55S100

100uCi.

2.73 years

X-ray, Beta

5.9, 6.5, β231.4

Gamma, Beta

834.8, β542.2

Mn54S1

1uCi.

312 days

Gamma

1274.5, 511

Na22S1

1uCi.

2.6 years

Alpha

5407.5

Po210S

0.1uCi.

138 days

Beta

β546

Sr90S

0.1uCi.

28.8 years

Beta

β763.7

Tl204S1

1uCi.

3.78 years

Gamma, Beta

1115.6, β236.34 β1351.9

Zn65S1

1uCi.

244 days

Other activities are available on special order to the maximum NRC Exempt Quantities.

Gamma sources may be order as Calibrated against the NIST Mixed Gamma Standard, SRM 4275C-125.