Results 41 to 50 of about 326,806 (263)

Development of versatile multiaperture negative ion sources [PDF]

AIP Conference Proceedings, 2015
Enhancement of negative ion sources for production of large ion beams is a very active research field nowadays, driven from demand of plasma heating in nuclear fusion devices and accelerator applications. As a versatile test bench, the ion source NIO1 (Negative Ion Optimization 1) is being commissioned by Consorzio RFX and INFN.
Cavenago M, Serianni G, Antoni V, Bigi M, De Muri M, Pasqualotto R, Recchia M, Veltri P, Agostinetti P, Barbisan M, Baseggio L, Cervaro V, Cazzador M, Degli Agostini F, Franchin L, Kulevoy T, Laterza B, Mimo A, Minarello A, Petrenko S, Ravarotto D, Rossetto F, Sattin M, Zaniol B, Zucchetti S   +24 more
openaire   +3 more sources

Towards large and powerful radio frequency driven negative ion sources for fusion

New Journal of Physics, 2017
The ITER neutral beam system will be equipped with radio-frequency (RF) negative ion sources, based on the IPP Garching prototype source design. Up to 100 kW at 1 MHz is coupled to the RF driver, out of which the plasma expands into the main source ...
B Heinemann, U Fantz, W Kraus, L Schiesko, C Wimmer, D Wünderlich, F Bonomo, M Fröschle, R Nocentini, R Riedl   +9 more
doaj   +1 more source

The Plasma Parameters of Penning Discharge with Negatively Biased Metal Hydride Cathode at Longitudinal Emission of H– Ions

East European Journal of Physics, 2021
The enhancement of negative ion production in a volume Penning based source could be performed by the application of metal hydride cathode. Hydrogen isotopes are stored there in a chemically bound atomic state and desorbed from the metal hydride under ...
Ihor Sereda, Yaroslav Hrechko, Ievgeniia Babenko Babenko   +2 more
doaj   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

Molecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Suppression of stray electrons in the negative ion accelerator of CRAFT NNBI test facility

Nuclear Engineering and Technology, 2023
Comprehensive Research Facility for Fusion Technology (CRAFT) is an integration of different demonstrating or testing facilities, which aim to develop the critical technology or composition system towards the fusion reactor.
Yuwen Yang, Jianglong Wei, Junwei Xie, Yuming Gu, Yahong Xie, Chundong Hu   +5 more
doaj   +1 more source

EDNRB‐dependent endothelin signaling reduces proliferation and promotes proneural‐to‐mesenchymal transition in gliomas

Molecular Oncology, EarlyView.
Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau, Leonor Garcia, Hugo Arnold, Antonija Hanžek, Maialen Arrieta, Laurent R Gauthier, Christine Granotier‐Beckers, François D Boussin, Amaury Herbet, Marie Hautière, Valentin Asei‐Ceschino, Clémentin Jacques, Laura Brard, Thomas Harnois, Valérie Coronas, Bruno Constantin, Aurélien Chatelier, Jean Chemin, Serge Urbach, Martial Seveno, Szimonetta Hideg, Chantal Ripoll, Kasandra Aguilar‐Cázarez, Min Zheng, Guo‐Hao Huang, Sheng‐Qing Lv, Lei Zhang, Philippe Rondard, Laurent Prezeau, Jean‐Philippe Pin, Hugues Duffau, Luc Bauchet, Valérie Rigau, Franck Denat, Charles Truillet, Didier Boquet, Jean‐Philippe Hugnot   +36 more
wiley   +1 more source

Experimental and simulation study on the backstreaming positive ions on the quarter-size negative ion source for CRAFT NNBI test facility

Nuclear Engineering and Technology
As 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, Yuwen Yang, Jianglong Wei, Ling Yu, Wen Deng, Rixin Wang, Yuming Gu, Chundong Hu, Yahong Xie   +8 more
doaj   +1 more source

Direct detection and identification of active pharmaceutical ingredients in intact tablets by helium plasma ionization (HePI) mass spectrometry

Journal of Pharmaceutical Analysis, 2014
A simple modification converts an electrospray ion source to an ambient-pressure helium plasma ionization source without the need of additional expensive hardware.
Athula B. Attygalle, Freneil B. Jariwala, Julius Pavlov, Zhihua Yang, Jason A. Mahr, Mabel Oviedo   +5 more
doaj   +1 more source

Numerical Simulations and the Design of Magnetic Field-Enhanced Electron Impact Ion Source with Hollow Cylinder Structure

Journal of Analytical Methods in Chemistry, 2020
An electron impact ion source-adopted magnetic field-enhanced technology has been designed for enhancing the electron intensity and the ionization efficiency.
Guochen Qi, Di Tian, Guolun Gao, Guangda Liu, Chunling Qiu, Tao Long   +5 more
doaj   +1 more source

Theoretical calculation of cesium deposition and co-deposition with electronegative elements on the plasma grid in negative ion sources

Nuclear Materials and Energy, 2023
We studied the work function of cesium deposition and co-deposition with the electronegative element on the plasma grid (PG) using the first-principles calculations.
Heng Li, Xin Zhang, Yuhong Xu, Guangjiu Lei, Katsuyoshi Tsumori, Mitsutaka Isobe, Akihiro Shimizu, Zilin Cui, Yiqin Zhu, Jun Hu, Yuxiang Ni, Shaofei Geng, Haifeng Liu, Xianqu Wang, Jie Huang, Hai Liu, Jun Cheng, Changjian Tang, CFQS team   +18 more
doaj   +1 more source