Sectors of Activity

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

Multigamma ray sources

These standard sources are characterized in terms of photon flux within 4 pi sr, expressed in s-1> for each specified gamma line. The source activity is also stated as an indicative value.

Precise calibration of gamma spectrometers requires a complete set of standards emitting gamma lines of different energies. This makes counting a time-consuming process.

Multigamma ray standards allow a rapid, precise energy and efficiency calibration. They are particularly useful in measuring the response of germanium detectors (type Ge(Li) and Ge-HP) and enabling direct, rapid plotting of efficiency/energy curves of gamma spectrometers without requiring the decay scheme parameters for the
radionuclides used.

The multigamma ray standard sources comprise a quasi-point deposit hot-sealed between two thin plastic foils (total mass per unit area : 28 mg.cm-2) and mounted in a plastic ring to ensure rigidity and ease of handling.

• Europium 152 for calibration in the energy range 100 - 1 500 KeV

• Baryum 133 for calibration in the energy range 30 - 400 KeV.

• Mixture of radionuclides

The mixture comprises the following radionuclides :

²⁴¹Am, ¹⁰⁹Cd, ⁵⁷Co, ¹³⁹Ce, ⁵¹Cr, ¹¹³Sn, ⁸⁵Sr, ¹³⁷Cs, ⁶⁰Co, ⁸⁸Y.

This single standard source covers the range 60 - 1 836 KeV.

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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)