Results 21 to 30 of about 2,222,331 (211)

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

open access: yesAnnales 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   +4 more
doaj   +1 more source

Plasma–neutral coupling allows electrostatic ion cyclotron waves to propagate below ion cyclotron frequency [PDF]

open access: yes, 2022
0000-0003-3627-6060The effect of ion–neutral collisions on the propagation characteristics of electrostatic ion cyclotron (EIC) waves in a partially ionized plasma is investigated.
S. Yoshimura   +3 more
core   +1 more source

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

open access: yesNuclear 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   +25 more
doaj   +1 more source

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

open access: yesNuclear 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

Time resolved neutron emission spectroscopy of DT plasmas with ion cyclotron resonance heating

open access: yes, 2001
The energy spectrum of the DT neutron emission was measured in experiments carried out at JET for plasmas of deuterium-tritium heated with different ion cyclotron resonance heating (ICRH) schemes.
Conroy, S   +7 more
core   +5 more sources

High-frequency Alfven waves in multi-ion coronal plasma : observational implications [PDF]

open access: yes, 2005
We investigate the effects of high-frequency (of order ion gyrofrequency) Alfvén and ion-cyclotron waves on ion emission lines by studying the dispersion of these waves in a multi-ion coronal plasma.
Ofman, L. (Leon)   +3 more
core   +1 more source

Observations and modelling of ion cyclotron emission observed in JET plasmas using a sub-harmonic arc detection system during ion cyclotron resonance heating [PDF]

open access: yes, 2018
Measurements are reported of electromagnetic emission close to the cyclotron frequency of energetic ions in JET plasmas heated by waves in the ion cylotron range of frequencies (ICRF). Hydrogen was the majority ion species in all of these plasmas.
P. Arena   +999 more
core   +5 more sources

Discovery of proton hill in the phase space during interactions between ions and electromagnetic ion cyclotron waves

open access: yesScientific Reports, 2021
A study using Arase data gives the first observational evidence that the frequency drift of electromagnetic ion cyclotron (EMIC) waves is caused by cyclotron trapping.
Masafumi Shoji   +8 more
doaj   +1 more source

Numerical simulation of unconstrained cyclotron resonant maser emission [PDF]

open access: yes, 2014
When a mainly rectilinear electron beam is subject to significant magnetic compression, conservation of magnetic moment results in the formation of a horseshoe shaped velocity distribution.
Cairns, R. A.   +10 more
core   +1 more source

Laboratory astrophysics : investigation of planetary and astrophysical maser emission [PDF]

open access: yes, 2013
This paper describes a model for cyclotron maser emission applicable to planetary auroral radio emission, the stars UV Ceti and CU Virginus, blazar jets and astrophysical shocks.
Ronald K   +36 more
core   +1 more source

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