Does the imbedded stabilization source reduce the sensitivity in the new version 11 SAM 935?
Basically, the difference in sensitivity between earlier versions and version 11 SAM 935 is so insignificant that it cannot be measured. We have to taken measurements in the vicinity of a calibration source (external) as well as the current stabilization source (imbedded) and can offer some generalizations as to how each situation may affect data acquisition using the version 11 SAM 935 while performing common tasks. For short to long term (1-20 minute) acquisitions there is no discernible difference in sensitivity. The imbedded source is only 10-20 nCi of Cs137. This source is located several inches away from the 3×3 inch detector crystal and contributes about 350 nrem/h in the photopeak which is a small fraction of the total background and makes it difficult, if not impossible, to see any loss in sensitivity. Short runs of 1-2 minutes on another Cs137 source with intensities of about 50 nrem/h yield solid statistics (low uncertainties with firm identification). Lower intensities can
Basically, the difference in sensitivity between earlier versions and version 11 SAM 935 is so insignificant that it cannot be measured. We have taken measurements in the vicinity of a calibration source (external) as well as the current stabilization source (imbedded) and can offer some generalizations as to how each situation may affect data acquisition using the version 11 SAM 935 while performing common tasks. For short to long term (1-20 minute) acquisitions there is no discernible difference in sensitivity. The imbedded source is only 10-20 nCi of Cs137. This source is located several inches away from the 3×3 inch detector crystal and contributes about 350 nrem/h in the photopeak which is a small fraction of the total background and makes it difficult, if not impossible, to see any loss in sensitivity. Short runs of 1-2 minutes on another Cs137 source with intensities of about 50 nrem/h yield solid statistics (low uncertainties with firm identification). Lower intensities can be
