Results 11 to 20 of about 3,816 (192)

Interpretation of ion cyclotron emission in the HL-2A tokamak

Nuclear Fusion
We report the first interpretation of ion cyclotron emission (ICE) based on the frequency variation in HL-2A tokamak experiments. The measured frequencies of ICE are concentrated around the ion cyclotron frequency, while simultaneously exhibiting a ...
Linzi Liu, Ruihai Tong, Haozhe Kong, Huasheng Xie, Huiling Wei, Guoliang Xiao, Zengchen Yang, Yonggao Li, Yang Chen, Min Jiang, Guangzhou Hao, Ji Xiaoquan, Li Bo, Li Jiquan, Zhongbin Shi, Min Xu, Wulyu Zhong, HL-2A team   +17 more
doaj   +2 more sources

First observations of ion cyclotron emission in the TCV tokamak

Nuclear Fusion
The first observations of ion cyclotron emission (ICE) in the Tokamak à Configuration Variable (TCV) tokamak are reported. The measured ICE frequency closely follows the deuterium ion cyclotron frequency at the magnetic axis, with temporal variations ...
A. Jansen van Vuuren, M.B. Dreval, R. Ochoukov, S.E. Sharapov, B.P. Duval, H. Elaian, L. Simons, C. Paraskevopoulos, A.N. Karpushov, the EUROfusion Tokamak Exploitation Team, the TCV Team   +10 more
doaj   +3 more sources

Study of ion cyclotron emission excited by tritium ions of fusion products via magnetoacoustic cyclotron instability theory in the EAST

Nuclear Fusion
This study investigates the ion cyclotron emission (ICE) excited by tritium ions generated through deuterium‒deuterium fusion reactions in the Experimental Advanced Superconducting Tokamak (EAST). ICE is an electromagnetic instability driven by fast ions,
Huapeng Zhang, Lunan Liu, Wei Zhang, Xuan Sun, Xinjun Zhang, Baolong Hao   +5 more
doaj   +2 more sources

Oxygen Attachment Dissociation of Protonated Reserpine and Its Analogs [PDF]

Rapid Communications in Mass Spectrometry, Volume 40, Issue 14, 30 July 2026.
ABSTRACT Rationale Carbon–carbon double bonds are ubiquitous structural motifs in natural products and pose a key challenge in locating their presence in analytes via MS‐based methods. Here, we use the alkaloid reserpine as a model system to examine whether OAD reactions can locate quaternary double bonds embedded in fused multicyclic structures ...
Jack G. Li, Chris J. Bowen, Bun Chan, Adam W. E. Stewart, Hidenori Takahashi, Richard A. J. O'Hair   +5 more
wiley   +2 more sources

Alfven cyclotron instability and ion cyclotron emission [PDF]

Nuclear Fusion, 1995
Two-dimensional solutions of compressional Alfven eigenmodes (CAEs) are studied in the cold plasma approximation. For finite inverse aspect ratio tokamak plasmas the two-dimensional eigenmode envelope is localized at the low magnetic field side with the radial and poloidal localization on the order of a/ square root m and a/4 square root m ...
N.N Gorelenkov, C.Z Cheng
openaire   +3 more sources

Development of the ion cyclotron emission diagnostic for the W7-X stellarator [PDF]

Review of Scientific Instruments, 2021
An ion cyclotron emission (ICE) diagnostic is prepared for installation into the W7-X stellarator, with the aim to be operated in the 2022 experimental campaign. The design is based on the successful ICE diagnostic on the ASDEX Upgrade tokamak. The new diagnostic consists of four B-dot probes, mounted about 72° toroidally away (one module) from the ...
W7-X Team, Moseev, D., Ochoukov, R., Bobkov, V., Dendy, R. O., Faugel, H., Hartmann, D., Kallmeyer, J.-P., Lansky, J., Laqua, H. P., Marsen, S., McClements, K. G., Nielsen, S. K., Reintrog, A., Salewski, M., Schmidt, B. S., Schulz, T., Stange, T., Gantenbein, Gerd, Huber, Martina, Illy, Stefan, Jelonnek, John, Kobarg, Thorsten, Lang, Rouven, Leonhardt, Wolfgang, Mellein, Daniel, Papenfuß, Daniel, Scherer, Theo, Thumm, Manfred, Wadle, Simone, Weggen, Jörg   +30 more
openaire   +6 more sources

A model of so-called "Zebra" emissions in solar flare radio burst continua [PDF]

Annales Geophysicae, 2011
A simple mechanism for the generation of electromagnetic "Zebra" pattern emissions is proposed. "Zebra" bursts are regularly spaced narrow-band radio emissions on the otherwise broadband radio continuum emitted by the active solar corona.
R. A. Treumann, R. A. Treumann, R. A. Treumann, R. Nakamura, W. Baumjohann   +4 more
doaj   +1 more source

Identification of core ion cyclotron instabilities on HL-2A tokamak

Nuclear Fusion, 2023
Instabilities in multiplies of ion cyclotron frequency range are identified and termed as core ion cyclotron emission (ICE) in recent HL-2A neutral beam injection heated experiments.
Linzi Liu, Ruihai Tong, Xiaolan Zou, Haotian Chen, Yang Chen, Guanqi Dong, Guangzhou Hao, Xiaoxue He, Yuxiao Han, Xiaoquan Ji, Anshu Liang, Bo Li, Jiquan Li, Yonggao Li, Liang Liu, Zhongbin Shi, Huiling Wei, Fan Xia, Guoliang Xiao, Jiao Yin, Deliang Yu, Boda Yuan, Yiren Zhu, Wulyu Zhong, Min Xu, HL-2A team   +25 more
doaj   +1 more source

A linear parameters study of ion cyclotron emission using drift ring beam distribution

Nuclear Fusion, 2023
Ion Cyclotron Emission (ICE) holds great potential as a diagnostic tool for fast ions in fusion devices. The theory of Magnetoacoustic Cyclotron Instability (MCI), as an emission mechanism for ICE, states that MCI is driven by a velocity distribution of ...
Haozhe Kong, Huasheng Xie, Jizhong Sun
doaj   +1 more source

Observations of core ion cyclotron emission on ASDEX Upgrade tokamak [PDF]

Review of Scientific Instruments, 2018
The B-dot probe diagnostic suite on the ASDEX Upgrade tokamak has recently been upgraded with a new 125 MHz, 14 bit resolution digitizer to study ion cyclotron emission (ICE). While classic edge emission from the low field side plasma is often observed, we also measure waves originating from the core with fast fusion protons or beam injected deuterons ...
R. Ochoukov, V. Bobkov, B. Chapman, R. Dendy, M. Dunne, H. Faugel, M. García-Muñoz, B. Geiger, P. Hennequin, K. G. McClements, D. Moseev, S. Nielsen, J. Rasmussen, P. Schneider, M. Weiland, J.-M. Noterdaeme   +15 more
openaire   +9 more sources