TENspec™ Measurement Method

Technology

  • High purity germanium (HPGe) detector provides fast and accurate measurement of Ra-226 by quantifying a specific Ra-226 low-energy peak.
  • Low-cost measurements using low-resolution Sodium Iodide (NaI) are not useful alone because the signal is lost in the noise. The TENspec™ system can provide information allowing NaI measurements to achieve quality objectives.
  • Baseline technology requires 4-week delay for ingrowth, whereas this technology has no requirement for ingrowth.
  • Count times as fast as 5-minutes for red/green go/no-go decisions. Count times of 30 to 40 minutes for quantitative determination of low activity material.
  • Measurement of Ra-228 is determined from a higher energy peak of a daughter product assuming the two are in equilibrium.
Picture
Spectra generated from HPGe detector (top) compared to spectra generated from NaI detector (bottom) showing how the low-energy peak is not distinct with less precise NaI detection.