TITLE

Nonlinear cyclotron harmonic absorption

AUTHOR(S)
Seol, JaeChun; Hegna, C. C.; Callen, J. D.
PUB. DATE
May 2009
SOURCE
Physics of Plasmas;May2009, Vol. 16 Issue 5, p052512
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Nonlinear oscillations of particle’s energy occur when a particle stays in a resonance zone. In this work, we found that collisionless heating of particles occurs when they pass the microwave beam at first, second, and third harmonic resonances. It is found that the net energy gain of particles from the microwaves is inversely proportional to the wave frequency. It is also found that the net energy gain is dependent on the microwave beam width. The energy gain of particles from a single pass through a resonance zone has been formulated analytically. A numerical calculation has been performed and the results are in good agreement with the analytic calculation. Both analytic and numerical calculations show a strong frequency dependence and a beam width dependence of nonlinear cyclotron resonance heating.
ACCESSION #
40637830

 

Related Articles

  • Plasma-materials interactions test facility. Uckan, Taner // Review of Scientific Instruments;Jan1980, Vol. 58 Issue 1, p17 

    The Plasma-Materials Interactions Test Facility (PMITF) recently designed and constructed at Oak Ridge National Laboratory (ORNL) is an electron cyclotron resonance microwave plasma system with densities around 1011cm-3 and electron temperatures of 10–20 eV. The device consists of a...

  • Electron cyclotron resonance plasma production by using pulse mode microwaves and dependences of ion beam current and plasma parameters on the pulse condition. Kiriyama, Ryutaro; Takenaka, Tomoya; Kurisu, Yousuke; Nozaki, Dai; Sato, Fuminobu; Kato, Yushi; Iida, Toshiyuki // Review of Scientific Instruments;Feb2012, Vol. 83 Issue 2, p02A324 

    We measure the ion beam current and the plasma parameters by using the pulse mode microwave operation in the first stage of a tandem type ECRIS. The time averaged extracted ion beam current in the pulse mode operation is larger than that of the cw mode operation with the same averaged microwave...

  • Modelamiento Numérico de Formación de un Anillo en Rotación en un Plasma de Resonancia Ciclotronica Electronica. Murillo Acevedo, M. T.; Guerrero Araque, J. E.; Dougar Jabon, V. D. // Revista Colombiana de Física;2008, Vol. 40 Issue 1, p180 

    The charge particle behavior in the electron cyclotron resonance plasma confined in a magnetic field of mirror type is studied through the particle-in-cell method. The energy which is transmitted to the plasma is of 2.45 GHz microwaves of 2.0 kV/cm amplitude. It is shown that when the electron...

  • Production of multicharged ions and behavior of microwave modes in an electron cyclotron resonance ion source directly excited in a circular cavity resonator. Kato, Yushi; Furuki, Hideyuki; Asaji, Toyohisa; Sato, Fuminobu; Iida, Toshiyuki // Review of Scientific Instruments;Mar2006, Vol. 77 Issue 3, p03A336 

    Electron cyclotron resonance ion sources (ECRIS) have been widely used for production of high-intensity multicharged ion beams. Making good use of microwave modes is proposed for enhancing the efficiency of ECR for production of multicharged ions (TAIKO II). We can assign the peak position of...

  • A simulation study of the Alfvén ion-cyclotron instability in high-beta plasmas. Ambrosiano, John; Brecht, Stephen H. // Physics of Fluids (00319171);Jan87, Vol. 30 Issue 1, p108 

    A one-dimensional electromagnetic particle-in-cell (PIC) model is used to investigate the Alfvén ion-cyclotron (AIC) instability in high-β plasmas with large ion temperature anisotropies. The simulation results are compared with linear and quasilinear theory. Nonlinear effects, such as the...

  • Validation of the beam tracing method for heating and diagnostics. Maj, O.; Pereverzev, G. V.; Poli, E. // AIP Conference Proceedings;11/26/2009, Vol. 1187 Issue 1, p637 

    The beam tracing approximate description of the propagation and absorption of wave beams is studied and compared to the corresponding exact solution of the wave equation for two simplified models relevant to electron cyclotron resonance heating and reflectometry diagnostics.

  • Contribution of Yushmanov-trapped electrons to a thermal dike. Tatematsu, Y.; Kiwamoto, Y.; Saito, T.; Yoshimura, Y.; Katanuma, I.; Tamano, T. // Physics of Plasmas;May96, Vol. 3 Issue 5, p1603 

    Examines Yushmanov-trapped electrons generated as a result of electron cyclotron resonance heating employed for generating a thermal dike in an open magnetic field configuration. Production rate and energy spectrum of the trapped electrons; Indicators of a reduction in power efficiency of the...

  • Implementation of an operator intervention system for remote control of the RIKEN 28 GHz superconducting electron cyclotron resonance ion source. Uchiyama, A.; Furukawa, K.; Higurashi, Y.; Nakagawa, T. // Review of Scientific Instruments;2014, Vol. 85 Issue 2, p1 

    The control system for the RIKEN 28 GHz superconducting electron cyclotron resonance ion source (28 GHz SC-ECRIS) consists of a distributed control system based on the experimental physics and industrial control system. To maintain the beam quality for the long beam-service time at the...

  • Use of Fast Ion D-Alpha diagnostics for understanding ICRF effects. Podestà, M.; Heidbrink, W. W.; Liu, D.; Luo, Y.; Ruskov, E.; Bell, R. E.; Fredrickson, E. D.; Hosea, J. C.; Medley, S. S.; Burrell, K. H.; Choi, M.; Pinsker, R. I.; Harvey, R. W. // AIP Conference Proceedings;11/26/2009, Vol. 1187 Issue 1, p69 

    Combined neutral beam injection and fast wave heating at cyclotron harmonics accelerate deuterium fast ions in the National Spherical Torus Experiment (NSTX) and in the DIII-D tokamak. Acceleration above the injected energy is evident in fast-ion D-alpha (FIDA) and volume-average neutron data....

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics