PF1000 High-Energy Plasma Focus Device Operated With Neon as a Copious Soft X-Ray Source

Akel, M.; Ismael, Sh.; Lee, S.; Saw, S. H.; Kunze, H.‐J.

doi:10.1109/tps.2017.2761843

Cited by 2 publications

(4 citation statements)

References 32 publications

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“…Therefore, we may conclude that our computed results are justified with those from Z-pinch. By comparing our results of numerical simulation with the research results [4,32], both the characteristics soft x-ray and PED increase with the increase in atomic number (N 2 , O 2 , and Ne) of used gases due to two factors: radius ratio and the effective ion charge while in our study we continue the increase in atomic number (Ar) of gas. We also focus on the effect of induced voltage, absorption correction factor, and ion density on the characteristics soft x-ray as it is found that both Y sxr and PED increase for high atomic number gases (N 2 , O 2 , and Ne) and then sharply reduce for Ar gas because the radius ratio and hence the number of ions inside the pinch of Ar plasma reduces significantly.…”

Section: Discussionmentioning

confidence: 51%

“…´-´), respectively [32]. The corresponding temperature window for each gas is set so that the PF is operating with the gas ionized to its H-like and He-like levels.…”

Section: Numerical Experimentsmentioning

confidence: 99%

“…The gas can also radiate soft x-ray outside the window, but the soft x-ray will not be its characteristic soft x-ray; meaning not from H-like and He-like levels. So, in the RADPF5.15 code, the line radiation yield (Q L ) is computed as the characteristic soft x-ray yield at the corresponding temperature window for each of these gases [32].…”

Section: Numerical Experimentsmentioning

confidence: 99%

“…As a megajoule DPF device, x-ray yield investigations in PF1000 are not very frequent since its prime object is to achieve fast neutron yield [30,31]. A numerical experiment was performed for Ne gas with pressure variation in PF1000 [32] to find optimum yield conditions. In this present work, we extend the numerical investigation to study the effect of atomic number and P 0 on radiations and characteristic soft x-ray in the standard PF1000.…”

Section: Introductionmentioning

confidence: 99%

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Effect of atomic number and pressure on plasma pinch properties and characteristic soft x-ray emission in PF1000

et al. 2022

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In this study, the Lee code is used to compute the characteristics soft X-ray yield (Ysxr) production for nitrogen (N2), oxygen (O2), neon (Ne), and argon (Ar) and bremsstrahlung radiation for hydrogen (H2), deuterium (D2), and helium (He) with pressure variation in PF1000 of 2.5 – 2.6 MA for D2. In calculation of characteristic soft X-ray, the corresponding temperature windows of the said gases are set into the code at which they are ionized to their H-like and He-like levels. The focus pinch parameters such as radius ratio (minimum radius of plasma pinch column/anode radius), ion density, specific heat ratio, pinch energy density, self-absorption correction factor and maximum induced voltage are computed at the optimum pressure of each gas. The obtained pinch plasma temperature range (1.2 - 2.2) × 10^6 K of H2, D2, and He is sufficiently high for fully ionized plasmas and the resulting bremsstrahlung radiation (14 J) for He is significantly larger than for H2 (0.26 J) and D2 (0.62 J). The optimum Ysxr of Ne(~9314 J) at 0.51 Torr with pinch energy density (PED) (~26 × 10^8 Jm^-3) is found to be the highest whilst for Ar(~7 J) at 0.019 Torr with (~1.2 × 108 Jm^-3) is the lowest. It is found that the radius ratio (~0.05) of Ne is 3-fold smaller than that (~0.16) in Ar. This enhancement of compression in pinch of Ne increases the ion density significantly by a factor of 253 than in Ar gas. Thus, the results show a strong correlation of plasma pinch properties with Ysxr for various gases

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Section: Discussionmentioning

confidence: 51%

“…´-´), respectively [32]. The corresponding temperature window for each gas is set so that the PF is operating with the gas ionized to its H-like and He-like levels.…”

Section: Numerical Experimentsmentioning

confidence: 99%

Section: Numerical Experimentsmentioning

confidence: 99%