The nine-nuclide gamma standard, routinely used to establish efficiency curves for gamma spectrometers, covers an energy range from 88 keV to 1836 keV. As options, Am-241 and/or Pb-210 can be added to extend the calibration curve down to 60 keV and 46 keV respectively. There are two nine-nuclide gamma standards available:
Series 7500 contains Te-123m and Cr-51 for those customers who require a non-mercury containing standard. Series 7600 contains Hg-203 and Ce-139. Please note that Hg-203 may leach out from polyethylene containers and may contaminate the entire container. Proper handling techniques must be observed.
The component nuclides of each series have been chosen to minimize peak interference, and the activity ratios have been selected to yield similar count rates in all major peaks on typical coaxial germanium detectors. The multinuclide standards are NIST traceable with each component certified with an uncertainty less than± 5% at the 99% confidence level except for Pb-210 when added. The multinuclide standards are prepared gravimetrically from calibrated solutions and then confirmed using a high purity germanium detector to ensure the highest possible quality. Multinuclide standards are made to order and can be supplied for special applications with nuclides, activities, containers and matrices manufactured to customer specifications.
Large Volume Multinuclide Standards (EG-LV-ML) and Multinuclide Marinelli Beaker Standards
(EG-LVM-ML)
These configurations provide a convenient method to calibrate HPGe and NaI(Tl) detectors, Large Volume Multinuclide Standards (EG-LV-ML) and Multinuclide Marinelli Beaker Standards (EG-LVM-ML).
In both series the radioactivity is uniformly dispersed in the matrix. Specify the series, matrix and container type and size. For the Marinelli beakers, specify the detector type. The following are examples of customer-supplied materials that may also be used:
- Soil
- Vegetation/Food Products
- Pulverized Concrete
The LV-ML wide mouth polyethylene sample bottles are available in 250 mL, 500 mL, and 1000 mL. Additional sizes are quoted upon request. Customer supplied containers will be filled upon request. See page 31 for technical drawings.
Series LVM-ML Marinelli beakers, for both HPGe and NaI(Tl) detectors, are available in 500 mL, 1000 mL, 2000 mL and 4000 mL sizes. This configuration is useful where maximum efficiency is needed such as environmental samples. See below for a complete listing of available sizes.
Large Volume
Download PDF
Reviews
There are no reviews yet.