Results 51 to 60 of about 30,961 (212)

Design, Installation, and First Results from the Ion Cyclotron Emission Diagnostic on TCV [PDF]

EPJ Web of Conferences
TCV is a medium sized tokamak equipped with a large suite of plasma diagnostics, a versatile array of poloidal shaping coils, an electron cyclotron heating system, and a two source neutral beam injection (NBI) system.
Ochoukov Roman, Duval Basil, Dreval Mykola, Jansen van Vuuren Anton, Karpushov Alexander N., Simons Luke, Sharapov Sergei, Bobkov Volodymyr, Faugel Helmut   +8 more
doaj   +1 more source

Heat Load Mitigation Studies in the W7‐X Stellarator Experiment

Contributions to Plasma Physics, EarlyView.
ABSTRACT During the experiments at the stellarator Wendelstein 7‐X (W7‐X) with fully water‐cooled plasma‐facing components (PFC), including carbon‐fiber composite (CFC) divertor targets with a thermal load capability of 10 MW/m2, high performance was achieved.
Dirk Naujoks, Amit Kharwandikar, Jasper Dettmar, Michael Endler, Joris Fellinger, Yu Gao, Joachim Geiger, Marcin Jakubowski, Thomas Sieber, Sebastian Thiede, Christian Voß, W7‐X Team   +11 more
wiley   +1 more source

Dependence of ion-cyclotron range of frequencies instabilities on species mix and fast-ion distribution: III. Novel sub-cyclotron modes

Nuclear Fusion
Dedicated DIII-D experiments studied instabilities above and below the ion cyclotron frequency by injecting thirteen different neutral beam populations into L-mode plasmas with different thermal compositions of H, D, and ^3 He at five different values of
W.W. Heidbrink, J.B. Lestz, N.A. Crocker, G.H. DeGrandchamp, K.E. Thome, Shelley Tong, S. Vincena, K. Barada, X.D. Du, W.A. Peebles, R.I. Pinsker, T.L. Rhodes, M.A. Van Zeeland, L. Zeng   +13 more
doaj   +1 more source

Study on Effect of Structure and Propellant on Beam of ECR Ion Source

Xibei Gongye Daxue Xuebao, 2019
To increase the ion current from the ion source is an important way to improve the performance of the electron cyclotron resonance ion thruster(ECRIT). The ion migration distance, magnetic topology and propellant have a close influence on the extracting ...

doaj   +1 more source

Research on Space Environmental Effect of Organic Composite Materials for Thermal Management of Satellites Using MC-50 Cyclotron [PDF]

Journal of Astronomy and Space Sciences, 2005
The organic material is one of the most popular material for the satellites and the spacecrafts in order to perform the thermal management, and to protect direct exposure from the space environment. The present paper observes material property changes of
Dae-Weon Kim, Dong-Iel Kim, Yong-Hak Huh, Tae-Keun Yang, Ho-Young Lee, Yong-Hyup Kim   +5 more
doaj   +1 more source

Explanation of core ion cyclotron emission from beam-ion heated plasmas in ASDEX Upgrade by the magnetoacoustic cyclotron instability [PDF]

Nuclear Fusion, 2020
Abstract Bursts of ion cyclotron emission (ICE), with spectral peaks corresponding to the hydrogen cyclotron harmonic frequencies in the plasma core are detected from helium plasmas heated by sub-Alfvénic beam-injected hydrogen ions in the ASDEX Upgrade tokamak. Based on the fast ion distribution function obtained from TRANSP/NUBEAM code,
Lunan Liu, R. Ochoukov, K.G. McClements, R.O. Dendy, V. Bobkov, M. Weiland, R. Bilato, H. Faugel, D. Moseev, M. Salewski, Wei Zhang, Xinjun Zhang, Yubao Zhu, B. Chapman, A. Zalzali   +14 more
openaire   +3 more sources

Hypervision Proton Surgery: The Future Direction of Proton Therapy

iNew Medicine, EarlyView.
ABSTRACT Proton beams provide unique physical advantages characterized by a low entrance dose, negligible exit dose, and a sharp Bragg peak, which enable superior sparing of normal tissues and support safe dose escalation for improved tumor control. However, conventional photon‐based fractionation remains widely used in proton therapy, where prolonged ...
Li Li, Shuanghu Yuan
wiley   +1 more source

Evidence for a Mid-Atomic-Number Atmosphere in the Neutron Star 1E1207.4-5209 [PDF]

, 2002
Recently Sanwal et al. (2002) reported the first clear detection of absorption features in an isolated neutron star, 1E1207.4-5209. Remarkably their spectral modeling demonstrates that the atmosphere cannot be Hydrogen.
Arnett D., Charles J. Hailey, Haensel P., Kaya Mori, Miller M. C., Zavlin V. E.   +5 more
core   +2 more sources

Nonmicrobial mechanisms dominate the release of CO2 and the decomposition of organic matter during the short-term redox process in paddy soil slurry

Eco-Environment & Health, 2023
Both biotic and abiotic mechanisms play a role in soil CO2 emission processes. However, abiotically mediated CO2 emission and the role of reactive oxygen species are still poorly understood in paddy soil.
Jinsong Liu, Changyin Zhu, Xiantang Liu, Xiaolei Wang, Dongmei Zhou   +4 more
doaj   +1 more source

Ion Activation Methods for Top‐Down Proteomics

Mass Spectrometry Reviews, EarlyView.
ABSTRACT Mass spectrometry (MS) has emerged as a premier method used to characterize the sequences of proteins. Top‐down proteomics aims to capture the multiple sources of structural diversity reflected in proteins, such as those that arise from alternative RNA splicing events or the addition of post‐translational modifications. Tandem MS (i.e., MS/MS)
Jada N. Walker, Jennifer S. Brodbelt
wiley   +1 more source