Sectors of activity

• alpha and multialpha ray sources
• beta sources
• gamma sources
• X-ray sources
• Reference wide area sources for radiation protection

alpha and multialpha ray sources

Alpha and multialpha ray sources are used for energy and efficiency calibration of all alpha detectors and measuring assemblies.

They are characterized in terms of :

• activity (Bq) (shown by a fading blue band in the table),
• alpha particle flux within a solid angle of 2 pi sr (s^-1).

The radionuclides are electroplated,

• either on a stainless steel disk 22 mm in diameter and 0.5 mm thick (type A),

• or on a polished stainless steel disk 25 or 30 mm in diameter and 0.5 mm thick (types B, C and D).

The sources are available in type A, B, C or D holders and can be set in Duralinox rings. LEA also produces calibrated multialpha ray sources (comprising a mixture of three radionuclides : ²⁴¹Am, ²⁴⁴Cm and ²³⁹Pu) characterized in terms of alpha particle flux (s^-1) within a solid angle of 2 pi sr.

 The alpha particle flux of each radionuclide represents around onethird of the total flux.

Download product references 
For a custom source request, contact LEA.

Radionuclides

• Americium 241 (²⁴¹Am)
• Curium 244 (²⁴⁴Cm)
• Plutonium 238 (²³⁸Pu)
• Plutonium 239 (²³⁹Pu)
• Uranium 233 (²³³U)