Flux and energy distribution of axial protons emitted from the hydrogen plasma focus

Banjanac, R.; Udovičić, V.; Grabež, B.; Panić, B.; Marić, Z.; Dragić, A.; Joković, D.; Joksimović, D.; Aničin, I.

doi:10.1016/j.radmeas.2005.06.012

Cited by 7 publications

(2 citation statements)

References 8 publications

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“…The overall intensity and angular distribution of high-energy protons give the chance to study nuclear reactions ( 7 Li (p, α) 4 He, 11 B (p, α) 2 4 He). The special attention was made to the profile of the axial protons emitted from the hydrogen plasma focus [18]. Unfortunately, the obtained experimental results show that it is not possible to realized 7 Li(p, α)α fusion reaction in a small plasma focus device (stored energy of 5.76 kJ) [19].…”

Section: Resultsmentioning

confidence: 99%

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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Section: Resultsmentioning

confidence: 99%

Plasma Focus Studies in Serbia

Udovičić¹,

Veselinović²,

Joksimović³

et al. 2014

JMP

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“…Extensive studies have been performed to characterize ion emission in PFDs in order to determine ion uence, ion energies, ion emission distribution and energy spatial distribution. Such studies have been commonly by others at one point on or around the z-axis above the anode by applying ion detectors like activation detectors for deuterium and nitrogen ions 2,11 , Faraday cups for hydrogen, helium, neon, argon and nitrogen ions [12][13][14][15][16][17][18][19][20][21][22] , Thomson spectrometer for hydrogen, deuterium, helium and nitrogen ions [23][24][25][26] , other methods used time of ight (TOF) technique for hydrogen and carbon 27,28 , CR-39 for hydrogen, deuterium, neon and nitrogen 23,[29][30][31][32][33] , PM-355 for deuterium ions 32 , LR-115 for hydrogen ions 34 and polycarbonate detectors by using extra aluminum lter as attenuators for nitrogen 35 .…”

Section: Introductionmentioning

confidence: 99%

Breakthrough 4π helium ion energy spatial distribution determination in plasma focus space by Sohrabi mega-size panorama cylindrical ion image detector

Zarinshad,

Sohrabi,

Amrollahi

et al. 2024

Preprint

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Recently Sohrabi theorized and discovered that ions in plasma focus devices (PFD) are emitted in 4π ion space instead of within small solid angle above anode, as commonly believed. Ion energies are commonly determined by others at single points above or around anode top. In this study, He ion energy distributions were determined in 4π PFD space applying Sohrabi mega-size panorama cylindrical polycarbonate ion image detectors pre-etched by surface layer removal (SLR) process before electrochemical etching. The SLR is pre-etching process which remove certain thickness of detector surface. Results show that track density versus layer thickness removed has saturation plateau corresponding to countable track density which is equal to penetration range of “minimum detected energy” in the detector. Also, thickness in which track density approaches zero is equal to penetration range of “maximum detected energy” in detector. At different cylindrical detector heights studied, corresponding minimum ion energies (7.0 to 328 keV) and maximum ion energies (70 to 640 keV) and for top cylinder base at different angles minimum energies (57 to 535 keV) and maximum energies (135 to 640 keV) were determined. The novel methods applied proved quite efficient for determination of He ion energies in 4π PFD ion space.

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