ESA wide area α and β sources • Discs
The radionuclides are deposited on a 0.01 in (0.3 mm) thick aluminum substrate (anodized surface), fixed on a stainless steel support of thickness 0.1 in (2.6 mm) ensuring the rigidity of the assembly.
The radiological characteristics (emergent flux) of the sources are measured with a calibrated absolute proportional 2π sr counter.
NOTE: The size of a calibration source should suit the size of the detector to be controlled or calibrated. It is recommended NOT to use wide area sources to control detectors of a significantly different size from the detector itself. LEA does not provide any guarantee on results for other uses than those recommended.
Production Range
36 mm • 1.4 in
44 mm • 1.7 in
110 mm • 4.3 in
From 0.6 to 6.3 in
47 mm • 1.9 in
50 mm • 2 in
120 mm • 4.7 in
From 0.8 to 6.7 in
Beta (β)
4000 Bq • 0.11 μCi
From 0.003 to 0.05 μCi
From 500 to 8000 Bq
From 0.014 to 0.22 μCi
Beta (β)
C-14, Co-60, Sr-90, Cs-137, Pm-147
P-32, S-35, Sr-89, I-129
Reference/Product No.
4π sr beta flux*
Standard manufacturing tolerance: ± 30%
IAEA Category: 5 • ISO2919 Classification: C11111
*Under COFRAC accreditation. Scope N°2-6386 available at www.cofrac.fr or upon request.
How to compose reference/product no.:
Replace [Type] with the letter K, L, M or N according to the required geometry. For example: Sr90 ESA K 20
Contact Radnostix
Use the link below to contact us or call 1.208.524.5300