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Temporal dispersion of a spectrometera)
a)Contributed paper, published as part of the Proceedings of the 17th Topical Conference on High-Temperature Plasma Diagnostics, Albuquerque, New Mexico, May 2008.
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View: Figures


Image of FIG. 1.
FIG. 1.

Grating geometry is shown. Path differences along the length of the grating are one cause of the temporal smearing. The angle labeled as in the figure is actually negative , given the measurement convention described in the text.

Image of FIG. 2.
FIG. 2.

Raw data obtained from streak camera for a 1800 lines/mm grating and a sweep time of 1 ns.

Image of FIG. 3.
FIG. 3.

Temporal profile of a measured pulse. The sharp rise and fall of the intensity define the temporal width of the pulse.

Image of FIG. 4.
FIG. 4.

Dependence of temporal dispersion on the number of grooves illuminated. Different gratings are employed to vary the number of grooves illuminated.

Image of FIG. 5.
FIG. 5.

Dependence of temporal dispersion on the number of grooves illuminated. Masks are used to restrict how much of the grating is illuminated.

Image of FIG. 6.
FIG. 6.

Dependence of temporal dispersion on spectral order.

Image of FIG. 7.
FIG. 7.

Effect of a spatially nonuniform beam on the temporal instrument function. Variations in intensity across the grating result in temporal variation in the image.


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Scitation: Temporal dispersion of a spectrometera)