To start nuclide identification, open the measurement node of RA37076A, select the peak evaluation under it.
When you double-click on it, the peak evaluator tries to open it. However, it was already used in nonlinearity as well as efficiency analysis, and that made it read-only. This is why a warning message window appears now.
As we possibly want to refine the deconvolution results by the help of the nuclide identification, it is advantageous to skip the loading of that read-only peak evaluation, and create a clone of it, which can be freely modified.
|
To clone the peak evaluation, select it on the left, and click on the task Make a clone on the right pane. After a few seconds, a second peak evaluation appears under the measurement.
As the peak evaluations ordered from the newest to the oldest by default, select the upper one for processing (if you are in doubt, check the date of the last modification on the upper right pane).
Open it with the peak evaluator by a double-click.
|
After the peak evaluation loaded, please immediately go to the Messages panel, and check that if the efficiency analysis is loaded automatically for the measurement. This is indicated in the last a message line.
If this is not the case, please close the peak evaluator, and follow the steps of the section “Designating a proper efficiency curve as a default“ to create such an assignment.
|
Select Option / Nuclide identificationmenu now, to check current settings.
Under Radiation libraries tab, you can select which radiation libraries should be involved in the nuclide search. At the bottom, it is possible to select one from the user defined nuclide exception lists.
For a regular decay measurement, it is not needed to modify these default settings.
|
Under the second tab, Efficiency, click on the 'Automatic efficiency selection from meas. setup' item.
If you properly set up your efficiency curve – measurement setup assignment earlier, then the efficiency curve will be immediately displayed at the bottom, which is belonging to the loaded measurement.
Now click OK.
This efficiency setting will be retained for next sessions, so the nuclide identification will be even more convenient next time.
|
Now the nuclide identification module loads the nuclear data necessary for the evaluation.
Please wait until the message disappears, then select Nuclide Ident. / Start identification menu.
|
Now the nuclide identification starts, which may last just a few seconds on a reasonable fast computer.
After the identification, the computed spectrum of the fitted nuclei will be displayed graphically.
|
This region contains 214Bi and 214Pb lines, and two lines were in a properly separated multiplet.
In this region, you can immediately observe the followings:
|