Calibration of Spectrometry/Geiger Counter

iMetry Application has two items to be calibrated.

Spectrometry Energy calibration

Cs137 and Ba133 sample radiation source is required for energy calibration.
You do not need to register sealed sample radiation sources to officials if their dose is lower than 0.25μCi in case of Cs137, lower than 1μCi in case of Ba133 in Japan.
iMetry covers 200~2000keV energy range, so calibrate energies around that range.
Adding a new energy calibration point with K40 will linear interpolate scintillator's actually non-linear characteristic, may cause slight shift of Ba133 and Cs137 spectrum peaks.
Or, Ba133 calibration point might be slightly mistaken, due to the combination of peaks.

  • 最終更新:2013-06-14 14:06:26