Spatially integrated spectra are displayed by clicking on the Time-Resolved Spectra button on the main window when one or more time steps are selected. The spectra for all selected time steps will be displayed in the same graph. By default, the spatially integrated spectra will be shown. The combo box in the Plot options panel will have options for the spatially resolved spectra, if they are available.
The size of the plot in the window can be changed by dragging on the vertical splitter bar to the left of the plot or on the horizontal splitter bar below the plot.
By default, the flux is plotted against photon energy in eV. The units can be changed by changing the setting in the Photon Energy Units combo box and clicking on the Update plot button.
For 2-D space-integrated spectra, the flux at the detector is shown in units of erg/cm2/s/eV. For an overview of how the flux at the detector is computed, see Appendix on SPECT3D Detector Fluxes.
To view the spectra for other time steps, select the required times in the Times list box and click on the Update plot button.
The current spectral resolution is shown in the Resolution parameters frame. The value can be changed by clicking on the Edit...' button. See Spectral and Image Resolution. The spectrum will be convolved with a Gaussian of width E/ΔE. Random noise can also be added to the spectrum by editing the resolution parameters.
By checking the Transitions Table box, a table of the transitions considered in the simulation is displayed. An example for the above spectrum is shown below.
Initially the Element box will be set to All, unless there is only one DCA element in the workspace. The transitions shown in the table can be filtered by:
After setting the filters, click on the Update button to apply the filtering. The filters chosen will only be applied if the Filter box is checked.
The transitions can also be sorted by clicking on the column headers.
The transitions will also show on the plot if the Transitions in Plot box is checked on the Spectra window. Any change in the transition filters will be reflected in the transitions shown in the plot if the Update Plot(s) on Change of Filter box is checked on the Transition Data window.
As an aid in identifying transitions in the spectrum, if a transition line is clicked in the spectrum, the corresponding transition will be shown in a box on the tool bar and shown as selected in the table. Conversely, a transition selected in the table will be shown as selected in the plot.
For information on how to modify the plot parameters or save images or data from the graph, see the PrismPLOT Users Guide.
The Spectral bands panel will list the names of any bands defined in the Band Intensities window. If any of the Show ... check boxes are checked, the corresponding item will be shown in the plot for any band or bands selected in the list. An example is shown below:
The band range is shown with grey shading, the fitted line is shown in red and the continuum fit is shown in green.
Spatially resolved spectra may also be displayed, if available.
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