(a) 3D view of the PF chamber along with the electrode assembly. (b) Schematic of the PF device with PXS and XIC.
Response curves of the three channels of PXS.
The current derivative signals recorded in a nitrogen medium at a pressure of 0.3 Torr for various anodes of lengths of 110, 115, 120, 125, and 130 mm. Ch1, Ch2, Ch3, Ch4, and Ch5 are for anodes of lengths of 110, 115, 120, 125, and 130 mm, respectively. The vertical and horizontal scales are and .
Plot showing the velocity of the current sheath near the top of the anode.
The PXS signals (Ch2-Ch4) along with the corresponding current derivative signal (Ch1) recorded in a nitrogen medium at a pressure of 0.3 Torr. The vertical and horizontal scales for each channel are and .
The PXS signals of a conventional as well as modified PF device recorded in nitrogen medium at a pressure of 0.3 Torr. The vertical and horizontal scales for each channel are and .
Total radiated x-ray yields for the set of anodes in different nitrogen gas pressures.
The x-ray signals recorded in the four channels of the PXS having Al filters of thicknesses of 10, 40, 60, and . A 125-mm-long anode is used. The vertical and horizontal scales for each channel are and .
Electron temperature as a function of the operating gas pressure.
X-ray pinhole images of the x-ray-emitting zone of the PF in different anodes of lengths (a) 110 mm, (b) 115 mm, (c) 120 mm, (d) 125 mm, and (e) 130 mm, recorded in a nitrogen medium at the best operating pressures. The pinhole is covered with a 2 mm aluminized Mylar.
Computational mean gray level of x-ray pinhole images shown in Fig. 10. (a)–(e) indicates the x-ray intensity of corresponding pinhole images obtained for different lengths of anodes.
Vertical (a) and horizontal (b) computational gray level spectra of a pinhole image recorded for a typical PF shot at 0.5 Torr nitrogen filling pressure using a 125 mm anode length.
X-ray pinhole image showing the hot spots recorded in a nitrogen medium. The pinhole is covered with a Al filter. The solid line indicates the tip of the hemispherical anode.
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