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and half-life uncertainty. The nuclide names can be any combination of eight characters, but must be consistent throughout all files. The library peak data include the energies and branching ratio or gammas/disintegration for each energy.
At startup, GammaVision automatically attempts to load the library last loaded (the first time you run GammaVision, the library
DEFAULT.LIB
is used). Thereafter, this working library can be replaced at any time with Library/Select File.... The library stays resident in memory after it has been loaded.
In the analysis report, the nuclides are listed in the order they are in the library. The size of a working library is limited to 65,000 bytes for any combination of nuclides and peaks (e.g., about
100 nuclides with 1900 peaks or 200 nuclides with 1600 peaks). Master or reference libraries
(e.g.,
MASTER.LIB
from A53-BI or
MASTER.MDB
from NuclideNavigator), from which the working libraries are built, can be any size. To analyze using larger libraries, such as those created by
NuclideNavigator III, the library for the analysis is specified in Analyze/Settings/Sample
Type... as the library from disk.
NOTE
Some old libraries might need to be rebuilt by copying the complete library to a new library with the Library/Edit... feature (Section 5.6.3). The “Can’t read library” error means this should be done.
5.6.1. Select Peak...
This opens a window containing a list of the library peaks in energy order (Fig. 198). This list shows the nuclide name, energy, gammas/
100 disintegrations, and half life. Clicking on any field moves the marker line to that energy in the spectrum.
The Library List can be sorted by nuclide, energy, percent, or half life by clicking on the desired column header.
5.6.2. Select File...
This opens the Load Library File dialog
(Fig. 199). If a library has already been selected, it is shown in the File name field. If File name contains a generic entry of
*.LIB
or
*.MDB
, no library is currently selected. Select the desired
Fig. 198. Peak List Dialog Box.
disk and filename and click Open. This library becomes the working library.
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