The effects of electrode configurations towards plasma current sheath in mather type plasma focus by using mathematical modeling

Zulkiplee, Ahmad Najwan; Said, Mohamad Aiman Mohd; Nawi, Nina Diana; Mohamad, Saiful Najmee

doi:10.1063/5.0037110

Cited by 1 publication

(1 citation statement)

References 9 publications

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“…Hence, active research and studies have been conducted on the effects of focus dynamics on neutron and X-ray yield, ion and electron beams emission for various gases in PF device. The formation and acceleration of plasma sheath (Habibi et al, 2010), the features of affecting discharge current and pinch current (El-Sayed et al, 2019), the sleeve length of electrodes separating the insulator (Lee and Saw, 2008), anode and cathode configurations (Koohestani et al, 2021), and filling gas types and pressures (Zulkiplee et al, 2021) are included in focus dynamics. The plasma pinch properties such as pinch length, radius, temperature, ion density, and pinch duration are directly influenced by the focus dynamics.…”

Section: Introductionmentioning

confidence: 99%

Correlation of Pinch Properties with Minimum Pinch Radius in UNU/ICTP PFF for Different Pressure of Argon Gas

Malek¹,

Rakib²

2022

IJSAR

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In this present work, numerical experiments are performed using the Lee code to examine the correlation of minimum pinch radius(rmin) with pinch energy density(PED),ion number density (Ni),induced voltage(Vmax), total radiation power (Prad),and Joule heating power (Pjoule)in UNU/ICTP PFF device when using argon gas at different pressure. The computed results show that at the optimum pressure of 1.0 Torr argon, PED (338 × 109Jm-3), Ni (123 × 1023/m3), Vmax (245 kV), Pjoule(114.48 × 108W),and Prad (173 × 108W) reach to their maximum values whilst the rmin reaches to its lowest value of 0.01 cm. At this optimum condition, the strong radiation cooling effect is found and the excess (Pjoule-Prad) in radiative power of -58.51× 108W(negative singe indicates the energy going out from pinch plasma) which is sufficiently enough to cause the radiative collapse in heavier argon pinch plasma. Hence, the excess radiation power would be another reason for the occurrence of radiative collapse beside the critical (Pease-Braginskii) current. The variation nature of pinch properties of this studies are compared with those of PF1000 plasma focus device that makes the consistent of the present research work.

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