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The toolbar’s Auto button is interlocked with the
Auto Y (Spectrum) checkbox. Therefore, clicking the toolbar’s Auto button on and off respectively turns on and off the Auto Y (Spectrum) feature in the analysis results Graph Properties dialog, and vice versa.
Similarly, the LOG button on the toolbar is interlocked with the Linear and Log radio buttons in the
Y Axis Scale section of the Graph Properties dialog.
The y-axis in the Display Analysis Results window is referred to as being in auto mode when (1) the
Auto Y (Spectrum) checkbox is marked or (2) the
Fig. 190. Draw Multiplet Modes.
Auto Y (Spectrum) box is unmarked and the range is set from 0 to 0. In auto mode, the LOG and Auto toolbar buttons behave as they do in the regular Detector and buffer windows.
When the Auto Y (Spectrum) checkbox is unmarked and the range is other than 0 to 0, the y-axis is referred to as being in manual range mode. When the y-axis is in manual range mode, the LOG and Auto buttons behave as follows:
! The LOG button toggles the y-axis between logarithmic (on) and linear (off) scaling.
! The Auto button toggles the y-axis between the auto (on) and manual (off) ranges.
! The LOG and Auto buttons work independently. They can both be turned on at the same time to achieve an Auto range with a logarithmic scale.
NOTE
Manually setting the range for one axis disables zooming for that axis only. If both axis ranges are manually fixed, all zooming is disabled.
5.5.6.3. Analysis Results Table
Figure 191 shows the Analysis Results Table window. The table records can be sorted by any parameter (e.g., energy, area, nuclide, FWHM) by clicking on the desired column header.
The Analysis Sidebar’s control menu is shown in Fig. 192 (click the title bar icon to open the menu). Mark or unmark Table to show or hide the Analysis Results Table; use Print on the
Analysis Results Table control menu to print the table as displayed (note that this is not the same as the complete report described in Chapter 7).
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783620H / 1013 5. MENU COMMANDS
Fig. 191. Analysis Results Table.
When the Analysis Results Table is displayed and GammaVision is in interactive-analysis mode, you can see more details about any peak by double-clicking on that peak in the table. This opens a Details window, as shown in Fig. 193. Use the Peak buttons to step to the next-highestenergy and next-lowest-energy peaks. Click Close or press <Esc> to exit.
Fig. 192.
Fig. 193. Details of Analyzed Peak Derived from the .UFO File.
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The Details window shows the following peak information, derived from the
.UFO
file structure
(which is described in detail in the File Structure Manual):
Peak energy
The library peak energy in keV, or the centroid energy for unknown peaks.
Peak centroid
The peak centroid energy from the spectrum.
Peak center
The peak centroid channel from the spectrum.
Peak range of integration
The low and high channel numbers for the peak region. These are the beginning and end channel numbers for the background region around a single peak. See also Multiplet range
of integration.
Multiplet range of integration
The low and high channel numbers for the multiplet region. These are the beginning and end channel numbers for the background region around the entire multiplet. All peaks in the multiplet will have the same low-/high-channel values.
Full-width-1/2-maximum
The full width at half maximum of the peak. It is a measured value for single peaks and a calculated value for peaks in a multiplet region.
Full-width-1/10-maximum
The full width at tenth maximum of the peak. It is a measured value for single peaks and a calculated value for peaks in a multiplet region.
Full-width-1/25-maximum
The full width at twenty-fifth maximum of the peak. It is a measured value for single peaks and a calculated value for peaks in a multiplet region.
Gammas per 100 disintegrations
Branching ratio from library, if peak was identified.
Net area
The corrected net area of the peak. For example, the PBC correction could be applied to this number.
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