Results 11 to 20 of about 30,996 (260)
The Full-Size Source and Injector Prototypes for ITER Neutral Beams [PDF]
Plasma and Fusion Research, 2016 Two Neutral Beam Injectors (NBI) will provide a substantial fraction of the heating power necessary to ignite thermonuclear fusion reactions in ITER. The development of the NBI system at unprecedented parameters (40 A of negative ion current accelerated up to 1 MV) requires a strong demonstration activity, which was endorsed by ITER to optimise the ...
SERIANNI, GIANLUIGI +13 more
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Studia Universitatis Babes-Bolyai Chemia, 2021 Lead isotopic ratio determination is significantly affected by the isobaric interference of mercury (204Hg), thus many studies lack 204Pb/206Pb values. Removal of 204Hg from sample is resource consuming, while mathematical correction can be employed if ...
Anamaria Iulia TÖRÖK +5 more
doaj +1 more source
New source of MeV negative ion and neutral atom beams [PDF]
Review of Scientific Instruments, 2015 The scenario of “electron-capture and -loss” was recently proposed for the formation of negative ion and neutral atom beams with MeV kinetic energies. However, it does not explain why the formation of negative ions in a liquid spray is much more efficient than with an isolated atom.
S. Ter-Avetisyan +6 more
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Estimation of neutral beam injector power transferred to KSTAR plasmas
Nuclear Engineering and TechnologyKSTAR shows the long pulse capability based on superconducting magnet and NBI plays a crucial role in sustaining the plasma via plasma heating and current driving.
Jong-Gu Kwak, J.H. Jeong, S.C. Hong
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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 +5 more
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Long-pulse ion source for neutral-beam applications
Vacuum, 1983 A rectangular ion source is being developed for producing 120-keV/25-A hydrogen ion beams for pulse durations up to 10 s. It consists of a plasma generator with a rectangular arc chamber (25×35 cm cross section) and an ion accelerator with rectangular grids (10×25 cm hole pattern). The plasma generator is a modified duoPIGatron type.
C. C. Tsai +5 more
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THE DOUBLET III NEUTRAL BEAM SOURCE CRYOPANEL SYSTEM [PDF]
IEEE Transactions on Nuclear Science, 1979 A cryogenic pumping system is designed to provide 1.4 × 106 l/sec. of hydrogen pumping speed for the Doublet III neutral beam ion source. The cryopump is made up of two elements; a cylindrical unit which uses a "Santeler" type of liquid nitrogen shield and a flat chevron shielded disk.
Tanabe, J., Yamamoto, R., Arend, P.V.
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Physical Review Accelerators and Beams, 2020 Beam intensity, proton fraction, and beam emittance represent the most important characteristics of a beam extracted by a proton source. Beam parameters are strongly related to the parameters of the plasma from which the beam is extracted.
G. Castro
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Nuclear Engineering and TechnologyAs an effective methods of plasma heating, neutral beam injection (NBI) systems based on negative hydrogen ion sources will be utilized in future magnetic-confinement nuclear fusion experiments.
Yongjian Xu +8 more
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Effect of terahertz irradiation on DNA damage repair in living cells
FEBS Open Bio, EarlyView.We investigated the effect of terahertz (THz) wave irradiation on DNA double‐strand break (DSB) repair in living cells. We found that THz irradiation enhanced DSB repair at specific frequencies, whereas heat treatment inhibited it, indicating that this effect is nonthermal and frequency‐specific.
Yuya Ueno +3 more
wiley +1 more source