An electron source with a multiaperture plasma emitter and beam extraction into the atmosphere

Vorobyov, Maxim; Koval, N. N.; Sulakshin, S. S.

doi:10.1134/s0020441215040132

Cited by 41 publications

(6 citation statements)

References 7 publications

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“…Rapat arus berkas elektron plasma yang paling optimum terjadi ketika potensial plasma dalam BE sama dengan potensial kolektor yang dipasang. Pada eksperimen selanjutnya untuk dapat lebih memperbesar nilai rapat arus plasma yang terekstraksi (ADPS) perlu adanya tegangan ekstraksi U a (yang dapat divariasi) hingga orde ratusan kilovolt atau sekitar U a = (150-200) kV [11].…”

Section: Hasil Dan Pembahasanunclassified

Penentuan Parameter Elektron Plasma Bejana Emiter Berbasis Besar Arus Lucut Busur Gas Udara

Purwadi

Suprapto²,

Aziz³

et al. 2020

risal.fis.

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Abstrak – Telah dilakukan penentuan parameter elektron plasma dalam Bejana Emiter (BE) berbasis besar arus lucut busur gas udara pada tegangan 10 kV untuk Ignitor Discharge Power Supply (IDPS) dan tegangan anoda 1 kV untuk Arc Discharge Power Supply (ADPS). Tekanan gas udara divariasi mulai dari 5,70 × 10-3 Torr hingga 7,90 × 10-3 Torr. BE terbuat dari Stainless Steel-304 (SS-304) silinder berdiameter ф = 4,00 cm dan panjang l = 66 cm, dipasangi grid berukuran 60 cm × 2,6 cm dan ditutup dengan frame yang terdiri dari 15 grup lubang (masing-masing berisi 10 lubang kecil berdiameter ф = 0,4 cm). Dari hasil eksperimen pada tekanan gas udara sekitar 6,8 × 10-3 Torr diperoleh arus berkas elektron pulsa terekstraksi sebesar 4,17 A pada tegangan tinggi ekstraksi 5 kV. Berdasarkan arus elekton terekstraksi tersebut, diperoleh kerapatan elektron plasma ne sebesar 3,15 × 1012 partikel/cm3 dan suhu elektron plasma Te sebesar 1,77 × 104 K ≈ 1,50 eV.Kata kunci: emitter, plasma, bejana emiter (BE), lucutan, kerapatan, suhu Abstract – The determination of plasma electron parameters in the Emitter Vessel (EV) based on arc dischage value of air gas has been conducted at 10 kV of Ignitor Discharge Power Supply (IDPS) and 1 kV of anode voltage for Arc Discharge Power Supply (ADPS). The air gas pressure was varied from 5.70 × 10-3 Torr to 7, 90 × 10-3 Torr. The EV was made from Stainless Steel-304 (SS-304) cylindrical shape with diameter ф of 4.00 cm and length l of 66 cm, fitted with 60.00 cm × 2.60 cm grid and covered with a frame consisting of 15 groups of holes (each containing 10 holes small diameter ф of 0.4 cm). From the experiment result at the average air gas pressure of about 6.80 × 10-3 Torr, it was obtained 4.17 A of extracted pulse electron beam current at 5 kV of extracted high voltage. Based on that extracted electron beam current, it was obtained 3.15 × 1012 particles/cm3 of plasma electron density ne and 1.77 × 104 K ≈ 1.50 eV of plasma electron temperature Te. Key words: emitter, plasma, emmiter vessel (EV), discharge, density, temperature

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Section: Hasil Dan Pembahasanunclassified

Penentuan Parameter Elektron Plasma Bejana Emiter Berbasis Besar Arus Lucut Busur Gas Udara

Purwadi

Suprapto²,

Aziz³

et al. 2020

risal.fis.

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“…Discharge with a hollow anode has received a wide acceptance in the so-called sources of electron beams with plasma cathode [28][29][30][31]. Figure 2 also demonstrates the principle of operation of the electron beam source.…”

Section: Typical Systems For Obtaining Low-pressure Dischargesmentioning

confidence: 99%

“…One more electron beam source is shown schematically in figure 25. The source is intended for the generation of a highenergy electron beam with extraction into the atmosphere [29].…”

Section: Electron Sources With Plasma Emittermentioning

confidence: 99%

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Low-pressure discharges with hollow cathode and hollow anode and their applications

Korolev¹,

Koval²

2018

J. Phys. D: Appl. Phys.

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The review relates to low-pressure discharges with a hollow cathode and a hollow anode. The term ‘low pressure’ implies that a neutral particle density is extremely small and the electron free path for ionization is in excess of the characteristic size for the discharge gap. On the other hand, the neutral particles still play an essential role in forming the gas-discharge plasma. Thus, the discharge regimes keep an intermediate position between the classical low-pressure discharge with avalanche ionization and pure vacuum discharge that burns in the cathode metal vapor. New approaches to the interpretation of the discharge formation mechanism at the stage of delay time to breakdown, and for the discharge sustaining features at the later temporal stages, are discussed. The developed approaches offer the possibility of interpreting the discharge behavior in the systems to obtain a uniform plasma in a large volume of the cathode or anode cavity, in the sources of electron and ion beams based on the plasma cathode and in the high-current pseudospark switches.

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“…The solid film window must be strong enough to withstand a pressure difference of ten orders of magnitude, and thin enough to transmit electron beams effectively. Titanium, aluminum and other metal films are widely used as transmission windows for high energy electron beam [2,7]. For lower energy electron beam, it was reported that functional films including ceramic film and diamond film are employed in electron beam plasma sources [8,9].…”

Section: Introductionmentioning

confidence: 99%

Investigation on property of electron beam plasma with diamond window

Zhu¹,

Yan²,

Chen³

et al. 2022

Plasma Sources Sci. Technol.

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The properties of Ar plasma generated by electron beam with initial energy of 45 keV passing through a 5-μm-thick diamond film window was investigated by experimental diagnostic and Monte Carlo simulation. It is found that the plasma light emission intensity enhances with increasing the electron beam current, while the plasma shape has no significant change. When the gas pressure increases, the plasma shrinks and becomes brighter, and its shape gradually changes from cone-shape to semi prolate spheroid. The electron density increases with increasing gas pressure and electron current. When the gas pressure is higher than 10 kPa, the electron density can reach the order of 1010 cm-3 at an electron current of 0.3 mA. Under high-pressure conditions, the plasma range with respect to gas pressure satisfies well a simple inverse relationship. The electron energy deposition distribution obtained by Monte Carlo simulation is consistent with the measured plasma light emission intensity distribution. Optical emission spectroscopy was used to analyze collision process in the electron beam plasma. The line intensities of the 2p2, 2p6 and 2p10 levels grow relatively with increasing gas pressure, indicating that the atom-atom collisional processes are enhanced.

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An electron source with a multiaperture plasma emitter and beam extraction into the atmosphere

Cited by 41 publications

References 7 publications

Penentuan Parameter Elektron Plasma Bejana Emiter Berbasis Besar Arus Lucut Busur Gas Udara

Penentuan Parameter Elektron Plasma Bejana Emiter Berbasis Besar Arus Lucut Busur Gas Udara

Low-pressure discharges with hollow cathode and hollow anode and their applications

Investigation on property of electron beam plasma with diamond window

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