Thermo-mechanical design of the extraction grids for RF negative ion source at HUST
Sign Up to like & getrecommendations! Published in 2017 at "Fusion Engineering and Design"
DOI: 10.1016/j.fusengdes.2016.10.016
Abstract: Abstract Huazhong University of Science and Technology (HUST) is developing a small radio frequency negative ion source experimental setup to promote research on neutral beam injection ion sources. The extraction system for the negative ion… read more here.
Keywords: extraction; thermo mechanical; ion source; ion ... See more keywords
Ion mobility studies on the negative ion-molecule chemistry of pentachloroethane
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Mass Spectrometry"
DOI: 10.1016/j.ijms.2017.04.011
Abstract: Abstract In this study we present an investigation of the negative ion-molecule chemistry of pentachloroethane (PCE) in air based ion mobility spectrometry and ion mobility spectrometry–mass spectrometry systems. The observed product ions are Cl −… read more here.
Keywords: chemistry; ion mobility; ion; ion molecule ... See more keywords
New urea-modified paper substrate for enhanced analytical performance of negative ion mode paper spray mass spectrometry.
Sign Up to like & getrecommendations! Published in 2017 at "Talanta"
DOI: 10.1016/j.talanta.2017.01.076
Abstract: Electrospray ionization mass spectrometry (ESI-MS) analysis in the negative ion mode is adversely affected by ionization suppression caused by electrical discharge and the presence of salts. Paper spray mass spectrometry (PS-MS) also suffers from the… read more here.
Keywords: paper substrate; mass spectrometry; ion mode; paper ... See more keywords
Chaos in positive ion–negative ion magnetized plasmas
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Plasma Physics"
DOI: 10.1017/s0022377820001348
Abstract: The dynamical behaviour of weakly nonlinear, low-frequency sound waves are investigated in a plasma composed of only positive and negative ions incorporating the effects of a weak external uniform magnetic field. In the plasma model… read more here.
Keywords: chaos positive; negative ion; ion magnetized; ion negative ... See more keywords
Coexistence of negative and positive polarity electrostatic solitary waves in ultradense relativistic negative-ion-beam permeated plasmas
Sign Up to like & getrecommendations! Published in 2018 at "Physics of Plasmas"
DOI: 10.1063/1.5024519
Abstract: The criteria for occurrence and the dynamical features of electrostatic solitary waves in a homogeneous, unmagnetized ultradense plasma penetrated by a negative ion beam are investigated, relying on a quantum hydrodynamic model. The ionic components… read more here.
Keywords: solitary waves; ion beam; electrostatic solitary; negative ion ... See more keywords
Negative ion of hydrogen in dense semi-classical plasmas: Stability and zero-energy resonances
Sign Up to like & getrecommendations! Published in 2021 at "Physics of Plasmas"
DOI: 10.1063/5.0064894
Abstract: The effects of dense semi-classical plasma (DSCP) on the ground state of the negative ion of hydrogen (H−) and on the dynamics of electron–hydrogen scattering have been investigated. DSCP is described by an effective potential… read more here.
Keywords: hydrogen; energy; semi classical; ion ... See more keywords
Investigations on Cs-free alternatives for negative ion formation in a low pressure hydrogen discharge at ion source relevant parameters
Sign Up to like & getrecommendations! Published in 2017 at "Plasma Physics and Controlled Fusion"
DOI: 10.1088/1361-6587/aa7120
Abstract: Caesium (Cs) is applied in high power negative hydrogen ion sources to reduce a converter surface's work function and thus enabling an efficient negative ion surface formation. Inherent drawbacks with the usage of this reactive… read more here.
Keywords: ion source; ion formation; ion; mola lab6 ... See more keywords
Initial caesium conditioning in deuterium of the ELISE negative ion source
Sign Up to like & getrecommendations! Published in 2018 at "Plasma Physics and Controlled Fusion"
DOI: 10.1088/1361-6587/aac7fb
Abstract: Negative ion sources used for neutral beam injection in fusion experiments are based on the surface production of H− or D− on caesiated low work function surfaces. The amount of co-extracted electrons is much higher… read more here.
Keywords: conditioning; deuterium; source; caesium ... See more keywords
Comment on 'Issues in the understanding of negative ion extraction for fusion'
Sign Up to like & getrecommendations! Published in 2017 at "Plasma Sources Science and Technology"
DOI: 10.1088/1361-6595/aa68d0
Abstract: The discussed paper strongly criticises the capability of 3D PIC codes for describing the extraction physics of negative hydrogen ions generated via the surface conversion process using caesium. A strong disagreement of the obtained results… read more here.
Keywords: extraction; comment; understanding negative; comment issues ... See more keywords
Neutralisation and transport of negative ion beams: physics and diagnostics
Sign Up to like & getrecommendations! Published in 2017 at "New Journal of Physics"
DOI: 10.1088/1367-2630/aa64bd
Abstract: Neutral beam injection is one of themost importantmethods of plasma heating in thermonuclear fusion experiments, allowing the attainment of fusion conditions aswell as driving the plasma current. Neutral beams are generally produced by electrostatically accelerating… read more here.
Keywords: transport negative; physics; neutralisation transport; negative ion ... See more keywords
Characteristics of the extracted negative-ion beam in a cesium-free negative-ion source using TPDsheet-U
Sign Up to like & getrecommendations! Published in 2021 at "Nuclear Fusion"
DOI: 10.1088/1741-4326/ac21fa
Abstract: The progress toward realizing a high-performance cesium (Cs)-free negative-ion source based on volume production in a magnetized sheet plasma device (TPDsheet-U) is reported. In the experiments, H− ions were successfully extracted from sheet plasma using… read more here.
Keywords: ion source; ion; free negative; cesium free ... See more keywords