GammaVision
®
v7 (A66-BW) 783620H / 1013
! “Peaked background correction” displays the PBC file name entered on the Corrections tab and the date/time the file was created.
! Absorption displays either database information as shown in Fig. 261 (material, density or mass, internal or external, and scaling factor [the latter is the Length value entered on the Corrections tab]) or the file information (file name, date/time created,
.UFO
file name used to generate the attenuation table, and the scaling factor [again, the Length value entered on the Corrections tab]).
! “Random summing” displays the slope value entered in the Random Summing field on the Sample tab; and the Net factor, which is the Random Summing Factor calculated per
Section 6.11.
! The “Iodine equivalence” and “Average energy” fields are only displayed if these options are enabled on the Isotopes tab.
! The “Energy Calibration” section displays the “Normalized difference,” a measure of how well the spectrum peak energies match those in the library (see Section 6.3.6). This can range from 0.0 to 1.0, with 0.0 being the best and 1.0 the worst. High values may be due to a poor calibration or to analyzing very small peaks that do not have statistically good shape. If the automatic energy recalibration is enabled and the criteria specified in
Section 6.3.6 are satisfied, a message indicates that the energy calibration was changed to fit the spectrum, and the new energy calibration coefficients used for the analysis are displayed.
7.7. Peak and Nuclide Tables
This section covers the various peak and nuclide tables GammaVision can report, based on the analysis engine used; see the following table. The content of a particular table may vary depending on the settings in the Sample Type Settings dialog or (
.SDF
) file, and in the b30winds.ini
analysis parameters file, which is discussed in detail in Section A.2.2.
Section / Peak or Nuclide Table
7.7.1
ROI Peak Summary
7.7.2
Summary of ROI Peak Usage
7.7.3
Summary of ROI Nuclides
7.7.4
Summary of Peaks in Range
7.7.5
Unidentified Peak Summary
7.7.6
Identified Peak Summary
338
Analysis Engine
ENV32 NPP32 WAN32 ROI32 GAM32
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
