Results 31 to 40 of about 40,757 (206)

Mini rf-driven ion sources for focused ion beam systems

Review of Scientific Instruments, 2003
Mini rf-driven ion sources with 1.2 cm and 1.5 cm inner chamber diameter have been developed at Lawrence Berkeley National Laboratory. Several gas species have been tested including argon, krypton, and hydrogen. These mini ion sources operate in inductively coupled mode and are capable of generating high current density ion beams at tens of watts of ...
Jiang, X., Ji, Q., Chang, A., Leung, K.N.   +3 more
openaire   +2 more sources

Simulation, design and tests of a diagnostic calorimeter for the spider experiment [PDF]

, 2013
One of the most critical issues for fusion reactors, to be studied in ITER (the prototype that has to prove the feasibility of production of electric energy by fusion), is the generation of sufficient energy to the sustainment of fusion reactions as well
De Muri, Michela
core  

Comparative experiments of different excitation frequency in a large-area RF negative ion source for NBI application

Nuclear Fusion
The excitation frequency is a critical parameter for the radio frequency (RF) ion source employed in the Neutral Beam Injection (NBI) system for the magnetic confinement fusion devices.
Na Wang, Bo Liu, Wei Liu, Xu-Feng Peng, Yu-Fan Li, Yu-Wen Yang, Yong-Jian Xu, Yu-Ming Gu, Cai-Chao Jiang, Ya-Hong Xie, Yuan-Lai Xie, Li-Zhen Liang, Jiang-Long Wei   +12 more
doaj   +1 more source

Negative ion research at the Culham Centre for Fusion Energy (CCFE)

New Journal of Physics, 2016
A summary of negative ion development work being presently undertaken at the Culham Centre for Fusion Energy is given. The small negative ion facility has an RF driven volume ion source with beam extraction at energies up to 30 keV. The extracted beam of
R McAdams, A J T Holmes, D B King, E Surrey, I Turner, J Zacks   +5 more
doaj   +1 more source

Design of NNBI RF power source output power control system

He jishu, 2023
BackgroundWith the development of negative ion based neutral beam injection system (NNBI) for China fusion engineering test reactor (CFETR), the output power control system of its supporting the radio frequency (RF) power source is one of the key ...
WANG Zhao, WANG Mingwei, LEI Tao, BAI Jianjun, GE Rui   +4 more
doaj   +1 more source

Design of the RF ion source for the ITER NBI [PDF]

Fusion Engineering and Design, 2007
Abstract A radio frequency (RF) driven negative ion source has been designed for the ITER neutral beam injectors, as an alternative to the traditional arc driven solution. The main advantage of this technology is to avoid the presence of the filaments, that require periodic maintenance and consequently frequent shutdowns.
Marcuzzi, D., Agostinetti, P., Dalla Palma, M., Falter, H. D., Heinemann, B., Riedl, R.   +5 more
openaire   +3 more sources

Ion flux-energy distributions across grounded grids in an RF plasma source with DC-grounded electrodes [PDF]

, 2022
We present an experimental investigation of the ion flux–energy distribution functions (IFEDFs) obtained across grounded grids in an asymmetric capacitively coupled RF source using a helium discharge. The powered electrode in the RF source is DC-grounded
Soni, Kunal, Steiner, Roland, Antunes, Rodrigo, Moser, Lucas, Meyer, Ernst, Marot, Laurent   +5 more
core   +1 more source

Emittance of a Low-Power RF Ion Source with a Micrometer-Scale Extraction Aperture

East European Journal of Physics
The concept of a compact nuclear microprobe is based on specialized ion sources with beam currents not exceeding a few nanoamperes and a small energy spread.
Vitalii I. Voznyi, Aleksandr G. Ponomarev, Dmytro V. Mahilin, Dmytro P. Shulha, Volodymyr A. Rebrov   +4 more
doaj   +1 more source

Kinetics of electrons and neutral particles in radio-frequency transformer coupled plasma H− ion source at Seoul National University

New Journal of Physics, 2016
In volume production H ^− ion sources, control of electron temperature is essential due to its close correlation with the generation of vibrationally-excited hydrogen molecules in the driver region as well as the generation of H ^− ions by dissociative ...
K J Chung, J J Dang, J Y Kim, W H Cho, Y S Hwang   +4 more
doaj   +1 more source

A High-Intensity, RF Plasma-Sputter Negative Ion Source [PDF]

, 1999
A high-intensity, plasma-sputter negative-ion source based on the use of RF power for plasma generation has been developed that can be operated in either pulsed or dc modes. The source utilizes a high-Q, self-igniting, inductively coupled antenna system,
Zhang, T., Alton, G. D., Y. Bao, Cui, B., Lohwasser, R., B. Cui, G. D. Alton, T. Zhang, C. A. Reed, Bao, Y., R. Lohwasser, Reed, C. A.   +11 more
core   +1 more source