Sectors of Activity

• Multigamma ray standard solutions
• Water equivalent resin matrices
• Gaseous standards
• Kits of gamma sources
• Multigamma ray sources

Multigamma ray standard solutions

Multigamma ray standard solutions are characterized in terms of photon flux per unit mass within 4 pi sr (expressed
in s^-1.g^-1). The energies of the gamma lines used as reference are also certified. The specific activity is stated.

For energy and efficiency calibration of NaI(TI) or Ge detectors, LEA recommends the following radionuclides or radionuclide mixtures :

• Europium 152, in the 122 à 1 408 keV energy range,
• Baryum 133 in the 30 à 400 keV range,
• Mixture of radionuclides (²⁴¹Am, ¹⁰⁹Cd, ⁵⁷Co, ¹³⁹Ce, ⁵¹Cr, ¹¹³Sn, ⁸⁵Sr, ¹³⁷Cs, ⁶⁰Co, ⁸⁸Y) n the 60 à 1 836 keV range.
  

The solutions are supplied in sealed ampoules. Solutions with high specific activities are supplied in capped vials for ease of handling. Multigamma ray standard solutions for environmental monitoring offer the following features :

low activity concentrations in large volumes, approximating experimental conditions,
packaging enabling the standard to be used without opening the container for calibration of NaI(TI), Ge(Li) and Ge-HP detectors.

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

Radionuclides

• Americium 241 (²⁴¹Am)
• Barium 133 (¹³³Ba)
• Cadmium 109 (¹⁰⁹Cd)
• Cerium 139 (¹³⁹Ce)
• Cesium 137 (¹³⁷Cs)
• Chromium 51 (⁵¹Cr)
• Cobalt 57 (⁵⁷Co)
• Cobalt 60 (⁶⁰Co)
• Tin 113 (¹¹³Sn)
• Europium 152 (¹⁵²Eu)
• Strontium 85 (⁸⁵Sr)
• Yttrium 90 (⁹⁰Y)