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Pinhole camera images from Mn foil target tests: (a) with a prepulse and (b) without a prepulse. A vertical lineout through the entire image is shown in (c), illustrating the intensity difference. Though the intensity increases, the emission is coming from a similarly sized region, as shown by the normalized lineout in (d).
Spectra from Mn foil target tests with and without a prepulse, illustrating that the intensity of the main -shell lines and associated satellites increases with the use of a prepulse by about a factor of 2.
Example radiographs from Mn foil target tests with and without a prepulse, demonstrating that the intensity of the imaging diagnostic output increases by about a factor of 2. These images were taken in an identical geometry to the one employed for backlighting tests on the Z facility.
Summary of selected Mn tests conducted in the Z-Beamlet calibration chamber. The energy values listed are the energy in light. Both the prepulse and main pulses were in duration, and there was a interval in between the two.
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