4 edition of Multi-species test of ion cyclotron resonance heating at high altitudes found in the catalog.
Multi-species test of ion cyclotron resonance heating at high altitudes
1997 by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va .
Written in English
|Statement||by A.M. Persoon ... [et al.].|
|Series||NASA contractor report -- NASA CR-206145.|
|Contributions||Persoon, A. M., United States. National Aeronautics and Space Administration.|
|The Physical Object|
IUPAC RECOMMENDATIONS Fourier transform-ion cyclotron resonance-mass spectrometer ; Mass spectrometer based on the principle of ion cyclotron resonance in which an ion in a magnetic field moves in a circular orbit at the cyclotron frequency that is characteristic of its m/z value. Ions are coherently excited to a larger radius orbit using a pulse of radio frequency electric field, and. Ion Cyclotron Resonance Spectroscopy. Annual Review of Physical Chemistry Vol. (Volume publication date The Savéant-proposed mechanism and (b) the Hori-proposed mechanism for CO production in low proton concentrations or high CO2 concentrations (). Thispaper describes the experimental characterization of single-pass ion cyclotron resonance heating as applied small near the resonance. 2) E z 0 because of the high conductivity of the electrons. 3) V z and nare time independent. Using the preceding assumptions, the equation for perpendicular. The response of ions during single-pass ion cyclotron resonance heating can be nonlinear . The ion flow is accelerated due to the gradient along the axial magnetic field, and the electric and magnetic fields of the cyclotron-heating wave. This acceleration will produce a decrease in the.
Statistics in management science
Historic Route 66
A collection of the most remarkable and interesting trials
Heaven and earth
Future of the book, part I
Lucknow and the world of Sarshar
Essay on the new species of writing
Clean coal technology
Moving Day In Feathertown
Studies in the agrarian history of England in the thirteenth century.
Brain and human behavior
Literature review of socio-economic trends affecting consumers and housing markets.
Theodora; or, The Spanish daughter
Images of Nepal
National Images and International Systems
life of Arthur Tappan.
Observations of ion distributions and plasma waves obtained by the Dynamics Explorer 1 satellite in the high-altitude, nightside auroral zone are used to study ion energization for three ion species.
A number of theoretical models have been proposed to account for the transverse heating of these ion populations. One of these, the ion cyclotron resonance heating (ICRH) mechanism, explains ion Author: A.
Persoon, W. Peterson, M. Andre, T. Chang, D. Gurnett, J. Retterer, G. Crew. of Iowa Multi-Species Test of Ion Cyclotron Resonance Heating at High Altitudes by A.
Persoon 1, W. Peterson 2, M. Andr6 3, T. Chang 4, D. Gurnett 1. Multi-Species Test of Ion Cyclotron Resonance Heating at High Altitudes Observations of ion distributions and plasma waves obtained by the Dynamics Explorer 1 satellite in the high-altitude, nightside auroral zone are used to study ion energization for three ion species.
A number of theoretical models have been proposed to account for the transverse heating of these ion populations. Multi-Species Test of Ion Cyclotron Resonance Heating at High Altitudes.
By W. Peterson, G. Crew, D. Gurnett, Observations of ion distributions and plasma waves obtained by the Dynamics Explorer 1 satellite in the high-altitude, nightside auroral zone are used to study ion energization for three ion species.
One of these, the. Multi-Species Test of Ion Cyclotron Resonance Heating at High Altitudes. By J. Retterer, D. Gurnett, T. Chang, Observations of ion distributions and plasma waves obtained by the Dynamics Explorer 1 satellite in the high-altitude, nightside auroral zone are used to study ion energization for three ion species.
One of these, the. Multi-Species Test of Ion Cyclotron Resonance Heating at High Altitudes Kindle Edition by National Aeronautics and Space Administration NASA (Author) Format: Kindle Edition See all formats and editions Hide other formats and editionsAuthor: National Aeronautics and Space Administration NASA.
23% of heating power (P ICRH = MW / P NBI+OH = 7MW) the fusion power was increased at least by 35% due to ICRH. INTRODUCTION A well known advantage of Ion Cyclotron Resonance Frequency (ICRF) heating of plasma in future fusion reactors, including ITER, is the dominant ion heating leading to higher Q gain and possibilities.
Ion cyclotron resonance heating system on Aditya 23 Table 1. Operating frequencies vs. magnetic ﬁelds. Gas used: H 2 B T (T) 075 091012 2f CH (MHz) 225 power supplies required for kW modular RF generator are described in § 6.
ION CYCLOTRON RESONANCE HEATING IN A STRONGLY INHOMOGENEOUS MAGNETIC FIELD K. Nozaki, B.D. Fried*, G. Morales* and A. Fukuyama* Institute of Plasma Physics, Nagoya University Furo-cho, Chikusa-ku -- Nagoya (Japan) * Center for Plasma Physics and Fusion Engineering University of California, Los Angeles U C L A -- Physics Department Hilgard Ave.
The coupling between the fast wave and the slow ion‐cyclotron wave in a plasma in which the equilibrium magnetic field is longitudinally inhomogeneous is reconsidered, using a model studied by White, Yoshikawa, and Oberman [Phys.
Flu ()].Such a coupling can only occur when a second ion species is present and for finite k ⊥.This configuration is of relevance to mirrors and. Abstract-Ion cyclotron resonance heating has been investigated, both experimentally and theoretically, on the Wisconsin Levitated Octupole.
Heating of both ions and electrons has been obseryed. Typically, a two component ion energy distribution is produced ( and 50 eV) with kW of r.f. power coupled into a 5 x 10” cm-3 plasma. Power is. Ion Cyclotron Resonance Heating Systems Upgrade toward High Power and CW operations in WEST Julien Hillairet1,a), Patrick Mollard1, Yanping Zhao2, Jean-Michel Bernard1, Yuntao Song2, Arnaud Argouarch1, Gilles Berger-By1, Nicolas Charabot1, Multi-species test of ion cyclotron resonance heating at high altitudes book Chen2, Zhaoxi Chen2, Laurent Colas1, Jean-Marc Delaplanche1, Pierre Dumortier4, Frédéric Durodié4, Annika Ekedahl1, Nicolas Fedorczak1.
Ion heating via a cyclotron resonance process involving waves near the ion gyrofrequency is studied using data from two cusp/cleft crossings of the polar-orbiting DE 1 satellite. ION-CYCLOTRON RESONANCE HEATING OF O + IN THE TOPSIDE IONOSPHERE AND MAPPING OUTFLOWS TO THE MAGNETOSPHERE.
BY ANTHONY W. PRITCHARD. A Thesis Submitted to the Department of Physical Sciences and the Committee on Graduate Studies In partial fulﬁllment of the requirements for the degree of Master in Science in Engineering Physics.
09/ tic heating has been noted earlier,9 but only for cases in which the cyclotron resonance condition was satisﬁed. For a sufﬁciently large-amplitude, obliquely propagating (k5kzzˆ1k’) wave, there indeed exists efﬁcient stochastic ion pitch angle scattering and heating by the Alfve´n wave even when kzvz is only a small fraction of Vc.
-&-Fast wave heating at the second, third and fourth harmonics of the ion cyclotron resonance, and slow wave heating at the fundamental in a single ion species hydrogen plasma, are found to be in gQod agreement with warm plasma theory at rf power levels kW.
Ion heating. Lewis Ball, Mats André, Heating of O+ ions in the cusp/cleft: double‐cyclotron absorption versus cyclotron resonance, Journal of Geophysical Research: Space Physics, /90JA, 96, A2, (), ().
Ion cyclotron resonance is a phenomenon related to the movement of ions in a magnetic is used for accelerating ions in a cyclotron, and for measuring the masses of an ionized analyte in mass spectrometry, particularly with Fourier transform ion cyclotron resonance mass spectrometers.
It can also be used to follow the kinetics of chemical reactions in a dilute gas mixture, provided. Kamlesh Shrivas, Mitsutoshi Setou, in Advances in Imaging and Electron Physics, Ion Cyclotron Resonance Mass Analyzer.
In an ion cyclotron resonance (ICR)-MS analyzer, the ions of a particular m/z ratio are isolated based on the cyclotron frequency of the ions in a constant magnetic field. The oscillation of ions in ICR induces an alternating current that is equivalent to their m/z.
ECR ion sources. Since the early s, following the award-winning pioneering work done by Dr. Richard Geller, Dr. Claude Lyneis, and Dr. Postma; respectively from French Atomic Energy Commission, Lawrence Berkeley National Laboratory and the Oak Ridge National Laboratory, the use of electron cyclotron resonance for efficient plasma generation, especially to obtain large numbers of.
Other articles where Ion cyclotron resonance heating is discussed: fusion reactor: Plasma heating: This technique is called ion cyclotron resonance heating. Similarly, electron cyclotron resonance heating may be used to heat electrons.
Such electron heating requires very high frequencies (tens to hundreds of gigahertz), such as produced by free-electron lasers and gyrotron tubes. Test of Ion Cyclotron Resonance Instability Using Proton Distributions Obtained From Van Allen Probe-A Observations Sung-Jun Noh 1, Dae-Young Lee, Cheong-Rim Choi1, Hyomin Kim2, and Ruth Skoug3 1Department of Astronomy and Space Science, Chungbuk National University, Cheongju, South Korea, 2Center for Solar- Terrestrial Research, New Jersey Institute of Technology, Newark, NJ, USA, 3Los.
Fast Wave Ion Cyclotron Resonance Heating Experiments on the Alcator C Tokamak T. Shepard*, C. Fiore, F. McDermottt, R. Parker, M. Porkolab Plasma Fusion Center, Massachusetts Institute of Technology, Cambridge, MassachusettsUSA Abstract In this paper, minority regime fast wave ICRF (Ion Cyclotron Range of Frequency).
Modelling Ion Cyclotron Resonance Heating and Fast Wave Current Drive in Tokamaks ABDUL HANNAN Doctoral Thesis Fast magnetosonic waves in the ion cyclotron range of frequencies have the and DIII-D etc. Fusion gain as high as Q= was ﬁrst observed in the JET experimentin.
Similar to ITER and in view of the limited bandwidth of about 10 MHz that can be achieved to ensure optimal functioning of the launcher, it is proposed to make core second harmonic tritium heating the key ion heating scheme, assisted by fundamental cyclotron heating 3 He in the early phase of the discharge; for the present design of DEMO—with.
Observations and modelling of ion cyclotron sub-harmonic arc detection system during ion cyclotron resonance heating K.G. McClements 1, A. Brisset2, B. Chapman 3, S.C. Chapman, the emission frequencies are too high for the wave-particle interaction to be represented.
Observations were made of ion cyclotron resonance absorption linewidths and shapes at values of E/P up to V/cmTorr. Three methods of heating the ions are compared. If the detector rf electric field is used to heat the ions, the line shapes are distorted and not well suited for simple interpretation.
With the dc heating method, the line shapes are close to Lorentzian and the collision. Multi-Species Test of Ion Cyclotron Resonance Heating at High Altitudes CYCLOTRON RESONANCE, DYNAMICS EXPLORER 1 SATELLITE, ELECTROMAGNETIC RADIATION, HIGH ALTITUDE, ION CYCLOTRON RADIATION, ION DISTRIBUTION, LOW FREQUENCIES, MONTE CARLO METHOD, PLASMA WAVES, turbulence, WAVE-PARTICLE INTERACTIONS.
Date. Title. Turbulent Heating. tion of ion cyclotron waves by the high-speed plasma ﬂow. This process diﬀers from the ion cyclotron resonance method utilized in tokamak fusion plasmas as the particles in VASIMR pass under the antenna only once (Bering et al., a,b; Chavers and Chang-Dı´az, ; Chang-Dı´az et al., ).
Suﬃcient ion cyclotron wave (ICW). This thesis considers the heavy ion dynamics due to ion-cyclotron resonance energization processes that take place in the turbulent region of the Earth’s topside, high latitude ionosphere.
We simulate the impact of this transverse heating process upon energies and velocity distribution functions of outflowing oxygen ions (O+) in the approximate altitude range of km to 15, km. Search within book.
Front Matter. Pages I-V. PDF. Line Shapes in ICR Spectra. Huizer, W. van der Hart. An Ion Cyclotron Resonance Study of an Organic Reaction Mechanism. McMahon. Pages Positive and Negative Ionic Reactions at the Carbonyl Bond in the Gas Phase. Author: Noterdaeme, J.
et al.; Genre: Book Chapter; Published in Print: ; Keywords: 10th Topical Conference on Radio Frequency Power in Plasmas, Boston, to ; Title: First Results of Ion Cyclotron Resonance Heating on ASDEX Upgrade. the Tokamak Fusion Test Reactor (TFTR) and Tore Supra, in that it is a resonant structure using a variable tuning ca pacitor.
The antenna is shown in Fig. 1 and consists of a current strap cm wide and em high that is shorted at one end and has a high-voltage variable capacitor at the other end.
Also, various independent groups have reported that weak magnetic fields, in particular ion cyclotron resonance fields, are capable of sharply altering behavior in rats.
Bioelectromagnetics. ;18(1) Electric-field ion cyclotron resonance. Liboff AR. Department of Physics, Oakland University, Rochester, MichiganUSA. Abstract. Ion Cyclotron Heating. Radiofrequency (RF) antenna systems that excite compressional Alfven or "fast" waves, typically operating in the frequency range of MHz, are used for both cyclotron magnetic resonance heating of ions and non-resonant heating of electrons.
An ion cyclotron resonance heating (ICRH) system has been designed, fabricated indigenously and commissioned on Tokamak Aditya. The system has been commissioned to operate between and MHz at a maximum power of kW continuous wave (CW).
Duration of ms is sufficient for operation on Aditya, however, the same system feeds the final stage of the MW ICRH system. The ion cyclotron resonance heating (ICRH) system, one out of three heating systems installed in ITER, will deliver 20 MW of radio frequency power to the plasma for up to one hour.
The power will be injected at radio frequencies through what we call "antennas," however, ITER antennas have very little in common with the one attached to the. Ion cyclotron resonance spectroscopy yields information on many aspects of ion-molecule chemistry. The method is ideally suited for experiments involving ion energies below several electron volts, and hence provides a valuable complement to other techniques (27).
eyclotron double resonance is uniquely suitable for establishing relationships. The ORNL RF Test Facility is to provide a national facility for the testing and evaluation of steady state, high-power (approxMW) Ion Cyclotron Resonance Heating (ICRH) systems and components.
The facility configuration consists of a vacuum vessel and two fully tested superconducting development magnets from the EBT-P program, arranged as. We have noticed that by placing the resonance region slightly closer to the outer side the bulk ion heating is improved in both scenarios by reducing the direct electron damping.
The values for bulk ion heating of a MW electromagnetic wave launch are MW for a plasma with 3% of 3He and MW for a plasma without 3He. Ar, N2, and Cl2 electron cyclotron resonance plasmas measured by time-of-flight analysis: Neutral kinetic energies and source gas cracking J. Vac. Sci. Technol.
B 15, () Heating uniformity of a microwave discharge plasma to redistribute a solid fuel layer inside a cryogenic target for inertial confinement fusion J.
Vac. Sci. Technol.Linac (SPL) etc, will require high current and high duty factor sources for protons and negative hydrogen ions. In order to achieve these goals, a comparison of the Electron Cyclotron Resonance, radio-frequency and Penning ion sources, among others, will be made.
For each of these source types, the present operational sources will be.sources, it comes out from condition (5) that the most optimal for ion cyclotron heating are antennas with wavelength λ L/2.
The obtained as a result of calculations  dependences of resonance curve on the wave number κ =2π/λ and the heating zone length L, conˇrm the fact of resonance curve broadening at λ L/2.
The application of.