783620H / 1013 5. MENU COMMANDS
NOTE
We recommend that you enter the standard name for the nuclide so that Nuclide Navigator will be able to recognize it. If you use a non-standard name, the TCC calculations could fail due to an inability to compute the parent daughter relationships.
Click the desired row under the Rank/Energy/Percent heading to highlight that row. Now, at the bottom of the (right-hand) peak list, click Insert... to open the Edit Library Peak dialog
(Fig. 207). Enter the energy of the gamma ray and the branching ratio of the peak.
5.6.3.3. Editing Library List Nuclides
To edit the information about a nuclide in the working library:
Click the nuclide to highlight it. The Edit... button (in the upper right of Fig. 200) will change to Edit plus the name of the nuclide, as shown in Figure 204.
Fig. 204. Ready to
Edit this Nuclide.
Click Edit [nuclide].... This will open the Edit Library Nuclide dialog
(Fig. 205). The Nuclide Name, Half Life, Uncertainty, and Nuclide Flags will already be listed.
The Uncertainty is a single number that represents the overall uncertainty (2 sigma or 95% confidence level) in the branching ratios entered for this nuclide. The
1-sigma uncertainty is added in quadrature to form the total uncertainty on the final report. The Uncertainty value should be taken from the nuclear data sheet for this nuclide. The default is 5%, but 2% is a realistic number.
The first six Nuclide Flags are used to show how the nuclide was produced. For example, Thermal Neutron
Activation (T) indicates that this nuclide is produced when the parent nuclide absorbs a slow neutron. This can be helpful in organizing reports by nuclide category.
More than one flag can be checked. Libraries produced with Nuclide Navigator II or later versions will already have these flags set. For other libraries, it will be necessary to consult a reference for the proper settings.
Fig. 205. Edit or Manually Add
Nuclide Name.
The No MDA Calculation flag indicates that the nuclide will not be reported unless present in the spectrum. If this is not marked, the MDA value will be printed if the nuclide is not present in the spectrum.
211
