Beam acceleration in plasma focus device

Antanasijević, R.; Banjanac, R.; Dragić, A.; Marić, Z.; Stanojevic, Jovica; Udovičić, V.; Vuković, J.

doi:10.1016/s1350-4487(01)00240-2

Cited by 4 publications

(4 citation statements)

References 6 publications

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“…[1][2][3] The mechanism leading to the generation of the high energy ion beam is believed to be closely corelated to phenomena that give rise to localised high electric field, such as the rapid compression during the radial pinch phase and instability. In fact, from the measurements of electron beam, 4) there is indication that localised high electric field may be induced by both these two phenomena.…”

Section: Introductionmentioning

confidence: 99%

Generation Of High Energy Ion Beams from a Plasma Focus Modified for Low Pressure Operation

Wong

Choi²,

Leong

et al. 2002

Jpn. J. Appl. Phys.

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This paper reports on the modification of a small plasma focus device (UNU/ICTP PFF) to operate at low pressure for enhanced ion beam generation. For the present operation, the electrode geometry of the plasma focus device is modified to redirect the plasma motion at the end of the axial rundown phase so that normal plasma focus action will not occur. The redirection of the plasma leads to a rapid increase in the plasma resistivity and hence a high localized electric field will be established and as a result, high energy ion beam will be generated. With air as the working gas, pressure as low as 10 À3 mbar has been tested. At such a low pressure, breakdown of the discharge must be initiated with the use of a set of twelve plasma injection cable guns. The modified plasma focus has been shown to be able to produce high energy ion beams of nitrogen, argon and hydrogen consistently.

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Section: Introductionmentioning

confidence: 99%

Generation Of High Energy Ion Beams from a Plasma Focus Modified for Low Pressure Operation

Wong

Choi²,

Leong

et al. 2002

Jpn. J. Appl. Phys.

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“…On the other side, the experiments with the hydrogen as a working gas show that the accelerated protons can achieve energy up to 500 keV with the total proton yield of (1.1 ± 0.2) × 10 9 per shot [16]. The spatial distribution of the accelerated protons shows anisotropy similar to that of deuterium ions [17].…”

Section: Resultsmentioning

confidence: 98%

“…In addition, on the same device, preliminary results were obtained of the short-living radioisotopes' production. The obtained radioisotopes in the plasma focus are 15 O, 17 F and 13 N, and the corresponding reactions are 14 N (d, n) 15 O, 16 O (d, n) 17 F and 12 C (d, n) 13 N, respectively. Activity of the short-living radioisotope was to 1 µCi per discharge [6].…”

Section: Introductionmentioning

confidence: 99%

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Plasma Focus Studies in Serbia

Udovičić¹,

Veselinović²,

Joksimović³

et al. 2014

JMP

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The plasma focus experiment in Belgrade, Serbia started in the late eighties of the last century. The historical overview of the research activity on the Belgrade plasma focus device (BPFD) will be presented in this work. The special attention has been made to the present status and the future plans for the fundamental and applied research as a part of the project of the studies of rare nuclear and particle processes in nature. BPFD is intended to operate as optimized neutron source or hard X-ray source. Using Lee model code as a reference, several upgrades of BPFD must be made: better shielding against EMI pulse, rearrangement of capacitors bank so that higher repetition rate can be achieved and also faster digital acquisition system. BPFD can be used for neutron activation or production of short-living radioisotopes. These radioisotopes will have very low activity which can be analyzed in the underground Low-Background Laboratory for Nuclear Physics, Zemun. Also, we compared the obtained experimental data (neutron yield, total current waveform, working gas pressure) with the numerical simulation code (The Lee model code) to test our plasma focus machine. Comparison between neutron yield from our experimental data and neutron scaling laws and neutron yields derived from computation using the Lee Model code shows good matching, but for better verification of the code, more experimental data are needed.

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