Importing steps

First create a project node in Main Module, which will contain all the sample measurements and their evaluations.

Then initiate the import of the sample spectra by right-clicking the Measurements node under the project and the select Import spectrum files from the pop‑up menu.

Spectrum file importer appears now.

Click Add files button, and select 10 sample Accuspec spectra with “A” ending in their file name, as can be seen in the picture.

Do not forget to check the settings under the Main settings tab.

Here you should specify the Dual LFC spectrum evaluation mode first, as these measurements are created using an LFC module, allowing compensation for count losses due to varying or high count rate situations.

At the Measurement setup combo box, you should select HyperLab's sample measurement setup. This is an important setting, because nonlinearity analysis will belong to a specific setup, and its input measurements should also have reference to the same setup.

If the sample setup can not be found in the list, create it by clicking on the New entry button beside the combo box.

Now you can enter the data for this sample setup. When you are ready, click OK.

The spectrum import form will appear again.

You should check the Calibrations tab now, where the source of FWHM and energy calibrations should be set to Spectrum files' own calibration values.

Click Load files button in order to initiate the spectrum loading.

All selected spectrum files will be loaded now, and the importer will provide basic information on the loading process.

Click Close to finish loading.

The database browser now displays the imported spectra. Now we will complete their missing sample settings.

The sample is important presently only for calibration measurements, serving as input for later nonlinearity, efficiency and resolution analyses. These analyses will identify gamma lines by using isotope information, which is in turn supplied by the user, during the sample definition.

Radioactive source details

HyperLab's sample spectra are taken with the following radioactive sources:

Spectrum file	Source name	Activity	Act. unc.	Ref. date
AM80320A.DAT	Am-241 OMH 80-320	221.50 kBq	1.0 %	1 Oct 1980
BA85211A.DAT	Ba-133 OMH 85-211	456.40 kBq	1.5 %	1 Oct 1985
CD01043A.DAT	Cd-109 OMH 2001-043	100.44 kBq	0.5 %	1 May 2001
CO01042A.DAT	Co-57 OMH-01-042	32.63 kBq	0.5 %	1 May 2001
CO85185A.DAT	Co-60 OMH 85-185	434.60 kBq	0.7 %	1 Oct 1985, 12:00
COD0111A.DAT	Co-56 (Ref.:2001/11/1)	-	-	-
CS96147A.DAT	Cs-137 OMH 96-147	20.75 kBq	1.5 %	1 Dec 1996, 12:00
EU80297A.DAT	Eu-152 OMH 80-297	250.30 kBq	2.0 %	1 Dec 1980
MN01041A.DAT	Mn-54 OMH 2001-041	18.98 kBq	0.5 %	1 May 2001
RA37076A.DAT	Ra-226 PTB 370-76	112.00 kBq	0.667 %	1 Jan 1978

The corresponding radioactive sources must be created and assigned to the proper imported measurement. When no activity data is indicated, no absolute activity value is known. However, as only detector efficiency analysis uses intensity values of radiations, this may be disadvantageous only in that case.

To define a source, click the measurement and select its “Measurement properties” task. The measurement's property editor window appears now.

Please check if its Source field is set. If there is no reference to an existing source, or the Measurement object type field does not set to Source, then changes have to be made.

Set the Measurement object type field to Radioactive source, and check in the list of Source field's combo if the searched source is already defined. If it is already in the list, then select it, and click OK to finish editing of measurement entry.

If the source list does not contain the searched source, click the Create new source entry button beside the combo box. A source record editor page appears now. For further details on source entry editing, see section “Source properties editor window”.

Note: Alternatively, instead of batch file importing, we could have loaded the spectra one by one, while supplying the sample information under the Sample tab for each spectrum file.

When all source data is properly set for each sample measurement, the loading of sample spectrum set is finished.