Experiments on helicon plasma sources

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August undefined, 2024

Web摘要： The VX-CR is a test platform simulating the helicon plasma source present at the first stage of the VASIMR(R) engine. The device was designed to study the performance of the VASIMR(R) plasma source for long periods of time (1 to 100 hours), allowing the development of the required thermal management subsystems and the analysis of … WebAug 1, 1998 · Abstract At powers of 500-800 W of 13.56 MHz rf power in a 1 kG axial magnetic field, the neutral pressure in the bulk of a helicon discharge with electron densities of and electron temperatures of eV in argon decreased by a factor of ten compared to the pressure before the discharge.

DEVELOPMENT OF DC ACCELERATOR ION SOURCES …

WebAug 1, 1992 · This work concerns a search for novel plasma generators with applications to materials processing and advanced accelerators and … WebFeb 17, 2024 · Helicon plasma sources do not require electrodes or grids directly immersed in the plasma, and also present an axial magnetic field confining the plasma discharge. These factors are believed to provide … subway in lineville al

(PDF) Experiments on helicon plasma sources

WebJul 8, 2007 · Ar plasma of 1013 cm-3 density was formed in a 2.5 cm i.d. helicon source and the acceleration experiments using RF antennae were performed. A repetitious saw-tooth coil current... WebApr 1, 2024 · In ion–ion plasma experiment, a low magnetic field of value around 100–600 Gauss will be used to study the plasma characteristics. 4. Antenna Antenna forms an important part of helicon plasma setup. Helicon wave is launched into the plasma by using different types of antenna. WebNov 1, 2024 · Testing and Analysis of Steady-State Helicon Plasma Source for the Material Plasma Exposure eXperiment (MPEX) Full Record Related Research Abstract Preparing for next-step fusion facilities will require developing materials that can withstand the high ion and neutron fluences that will be present in the divertor region. painters tamworth

Wave propagation and power deposition in blue-core helicon plasma

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WebJan 7, 2024 · These findings are of particular interests for the design of high-power helicon plasma sources operating in steady state, e.g., linear plasma-material interaction (PMI) … WebNov 18, 2002 · The ability to obtain high plasma densities with high fractional ionization using readily available, low-cost components makes the helicon a candidate plasma source for many applications, including plasma rocket propulsion, fusion component testing, and materials processing. However, operation of a helicon can be a sensitive … subway in lincoln neWebMay 1, 2001 · Helicon plasma drivers are commonly used to provide dense plasma columns over a wide range of magnetic field intensities (10-100 mT), and the axial magnetic field can be provided either by... subway in liberty nc

"WebD.D. Blackwell and F.F. Chen, Time-resolved measurements of the EEDF in a helicon plasma, Plasma Sources Sci. Technol. 10, 226 (2001); UCLA LTP-905 (May, 1999). 189: … " - Experiments on helicon plasma sources

Experiments on helicon plasma sources

First Helicon Plasma Physics and Applications Workshop

WebThe Large Experiment on Instabilities and Anisotropies (LEIA) was constructed to study space plasma phenomena in the laboratory. The plasma for LEIA is generated with the Hot hELIcon eXperiment (HELIX) inductively coupled plasma source [1]. With an appropriate choice of HELIX and LEIA operating parameters, high β. e (β = nkT. e /B. 2 http://www.seas.ucla.edu/ltptl/publications.htm

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WebJan 20, 2015 · CCPs are used mostly for deposition of silicon dioxide. ICPs use antennas on a dome above the wafer chuck to generate a plasma without a B-field. Helicon sources … WebEuPRAXIA is a leading European project aimed at the development of a dedicated, ground-breaking, ultra-compact accelerator research infrastructure based on novel plasma acceleration concepts and laser technology and on the development of their users’ communities. Within this framework, the Laboratori Nazionali di Frascati (LNF, INFN) will …

WebThe parameters of a helicon plasma source was studied for an rf power to 500 W and a magnetic field ranging from 0 to 200 G under an argon pressure of 3 mtorr. The electron … WebNov 1, 2024 · The primary goal of these experiments is to understand the thermal issues related to the running of the RF helicon source at high power (>10 kW) in steady state. …

Webnetic ﬁelds. Helicon source groups around the world are ac-tively investigating the high ionization efﬁciency of the heli-con source;1–3 the structure of the helicon wave in the … WebJan 19, 2015 · Plasma modifications of polypropylene (PP) surfaces are analyzed by means of vacuum beam experiments. A plasma source provides Ar ion beams and a background of UV photons. Additionally, neutral oxygen beams …

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WebA helicon plasma source has been designed using annular permanent magnets to produce the required DC magnetic ﬁeld (B-ﬁeld). With the discharge tube located in the remote ﬁeld, rather than the internal ﬁeld of the magnet rings, the plasma can be injected into a processing chamber containing the substrate to be treated. painters tape heated bedWebNov 2, 2024 · A planar helicon plasma source with a four-ring antenna has been developed on Linear Experimental Advanced Device (LEAD) in Southwestern Institute of Physics. The diameter of the largest antenna ring is 320 mm. subway in liberty lakeWebMay 17, 2024 · A new configuration for an antenna, which increases the absorption power and plasma density, is proposed for helicon plasma sources. The influence of the electromagnetic wave pattern symmetry on the plasma density and absorption power in a helicon plasma source with a common antenna (Nagoya) is analysed by using the … subway in linton inWebOct 1, 2024 · Results of experiments on a linear facility with a helicon plasma source operating at a frequency of 13.56 MHz and a power of up to 15 kW are reported. painters tape color meaningWebA helicon discharge is an excitation of plasma by helicon waves induced through radio frequency heating. The difference between a helicon plasma source and an inductively … painters tallahassee floridaWebJun 2, 2024 · RAID produces a helicon plasma column with characteristics similar to those of the AWAKE helicon source, and is therefore an optimal testbed for application to the AWAKE device. The spectrometer employed in RAID is based on polychromators which collect the light scattered by plasma electrons in spectrally filtered wavelength regions. painters tape dispenser with paperWebFeb 4, 2024 · Plasma waves can contribute to plasma production, and therefore, suitable plasma sources among potential candidates are essential for further advanced research. Finally, we show that high-density Helicon Plasma (HP) sources have many advantages for various fields, which leads to the development of new frontiers with attracting, … painters tape for golf grips