Resumen

ALTARABULSI, A. et al. Deuteron beam fluence emitted from dense plasma focus: Comparative investigation and simulation. J. appl. res. technol [online]. 2024, vol.22, n.4, pp.567-578.  Epub 01-Ago-2025. ISSN 2448-6736.  https://doi.org/10.22201/icat.24486736e.2024.22.4.2413.

The fluence of a deuteron beam emitted from three dense plasma focus (DPF) devices, PF-1000, MPEF-12 kJ and PF-2.7 kJ, versus deuterium gas pressure was simulated and studied using the adapted Lee model code (RADPFV6.16FIB). The computed fluences were then compared to the reported measured values of these devices at certain distances from the pinch, where the comparison showed good agreement including within the range of errors. Furthermore, many numerical experiments using the Lee code were conducted and discussed for other different energy devices over a wide initial D2 pressure range of (1-15 Torr), for studying the deuteron beam features at the pinch exit and various distances from the pinch. The obtained results indicated that the deuteron beam fluence is in order of 1020 ions.m-2 at the pinch exit for all the considered plasma focus devices (with energy storage included in the 0.2 - 863 kJ range) and this order can be reduced up to 1019 ions.m-2 at the distance of 14 cm from the pinch exit. Therefore, the placement of treated material samples, using plasma focus, at different distances from the anode tip plays an essential role (in addition to the number of plasma shots) for multi-applications (e.g., ion implantation, thin film deposition and surface modification).

Palabras llave : Dense plasma focus; Lee model code; deuterons; ion beam; deuterons fluence; properties of deuterons; deuterium gas.

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