Generation and propagation of electromagnetic waves resonantly excited by a heating wave near the electron cyclotron frequency.

由接近电子回旋频率的加热波共振激发的电磁波的产生和传播。

基本信息

项目摘要

In electron cyclotron heating (ECH) of tenuous plasmas in a magnetic beach configuration, two resonant processes complicates physical analyses, i.e. divergent increase of the parallel wave number and synchronized acceleration of increasing number of resonantly gyrating electrons. In this task, we have made a new trial to look into the process in terms of frequency-spectrum-analyses of electromagnetic waves excited in the cyclotron range under the stimulation of a strong monochromatic heating wave.We have constructed a compact sensitive diagnostic system that fit in a narrow accessible pace for diagnoses of a hot plasma in a tandem mirror, We have observationally confirmed a broad-band spectrum that is attributable to cyclotron emissions by individual hot electrons.New finding in this research is a strong narrow band spectrum at a few per-cent above the heating wave frequency. The peak frequency and the width decreases with increasing power of the heating wave, and the spectral structure depends on the magnetic field profile. We conclude that this narrow-band wave is generated by a resonant group of electrons which are phase-modulated in the velocity space under ECU and spatially bunched in the magnetic slope to generate coherent emissions at the local cyclotron frequency.
磁滩结构中微细等离子体的电子回旋加热(ECH)中,平行波数的发散增加和共振旋转电子数的同步加速两个共振过程使物理分析变得复杂。在本课题中,我们做了一个新的尝试,从频谱分析的角度来研究在强单色热波的刺激下,在回旋范围内激发的电磁波的过程。我们已经构建了一个紧凑灵敏的诊断系统,适合在一个狭窄的可达的空间诊断热等离子体在串联镜中,我们已经观测证实了一个宽带频谱,这是归因于单个热电子回旋辐射。这项研究的新发现是一个强窄带频谱,比热波频率高几个百分点。峰值频率和宽度随热波功率的增加而减小,光谱结构与磁场剖面有关。我们得出结论,这种窄带波是由一群谐振电子产生的,这些电子在ECU下的速度空间中进行相位调制,并在磁坡中空间聚集,在局部回旋频率上产生相干发射。

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
T.Saito,M.Ichimura,Y.Kiwamoto,A.Mase,et al.: "Enhanced axial loss of electrons from a tandem mirror induced by an Alfven ion cyclotron wave" Physical Review Letters. Vol.82,No.6. 1169-1172 (1999)
T.Saito、M.Ichimura、Y.Kiwamoto、A.Mase 等人:“由阿尔文离子回旋波引起的串联镜增强电子轴向损失”物理评论快报。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
Y.Kikuchi, Y.Kiwamoto, T.Takahashi, T.Saito, et al.: "In-situ calibration of microchannel-plate-based x-ray pinhole camera for observation of magnetically trapped plasma" Review of Scientific Instruments. 68・9. 3421-3425 (1997)
Y.Kikuchi、Y.Kiwamoto、T.Takahashi、T.Saito 等人:“用于观察磁俘获等离子体的基于微通道板的 X 射线针孔相机的原位校准”科学仪器评论 68・。 9. 3421-3425 (1997)
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
T.Saito, Y.Tatematsu, Y.Kiwamoto, et al.: "Effects of Anisotropy of End Loss Electrons on Axial Potential Profile and Electron Transport in the End Region of a Tandem Mirror" Journal of Phys.Soc.Japan. 66・12. 3809-3814 (1997)
T.Saito、Y.Tatematsu、Y.Kiwamoto 等:“端部损耗电子各向异性对串联镜端部区域的轴向电位分布和电子传输的影响”Journal of Phys.Soc.Japan 66・12. 3809-3814 (1997)
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
Y.Kiwamoto, Y.Kikuchi, T.Takahashi, T.Saito, et al.: ""Pinhole Camera Imaging of X-rays and Energetic Neutral Atoms for Hot Plasma Diagnostics"" Review of Scientific Instruments. Vol.69 No.6. 2574-2575 (1998)
Y.Kiwamoto、Y.Kikuchi、T.Takahashi、T.Saito 等人:“用于热等离子体诊断的 X 射线和高能中性原子的针孔相机成像”科学仪器评论。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
K.Kajiwara, T.Saito, H.Miyaue, Y.Tatematsu, Y.Kiwamoto, et al.: ""Validity of a Model Electron Distribution Function in an End Region of a Tandem Mirror"" Journal of Phys.Soc.Japan. Vol.67, No.10. 3647-3648 (1998)
K.Kajiwara、T.Saito、H.Miyaue、Y.Tatematsu、Y.Kiwamoto 等人:“串联镜端部区域中模型电子分布函数的有效性””Journal of Phys.Soc.Japan
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

KIWAMOTO Yasuhito其他文献

KIWAMOTO Yasuhito的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('KIWAMOTO Yasuhito', 18)}}的其他基金

Controlled Experiment on Dynamics of Vortex, Turbulence and Structure Formation in Long-range Force System Using Non-neutral Plasmas
非中性等离子体远程力系统中涡流、湍流和结构形成动力学的受控实验
  • 批准号:
    19340175
  • 财政年份:
    2007
  • 资助金额:
    $ 4.22万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Controlled non-neutral-plasma experiment on fundamental processes in transport and relaxation to equilibrium states of a many-charged-particle system.
关于多带电粒子系统的传输和弛豫到平衡状态的基本过程的受控非中性等离子体实验。
  • 批准号:
    17340173
  • 财政年份:
    2005
  • 资助金额:
    $ 4.22万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Controlled Experiment of Relaxation Processes of Many-Particle System Using Strongly Magnetized Nonneutral Plasma
强磁化非中性等离子体多粒子系统弛豫过程的控制实验
  • 批准号:
    13308021
  • 财政年份:
    2001
  • 资助金额:
    $ 4.22万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Controlled Experiment on Self-organization of Many-particle System Using Non-neutral Plasmas
非中性等离子体多粒子系统自组织受控实验
  • 批准号:
    11480107
  • 财政年份:
    1999
  • 资助金额:
    $ 4.22万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B).
Development of Adjustable Mode-Converter in High-Power Microwave Transmission System
大功率微波传输系统可调模式转换器的研制
  • 批准号:
    02558001
  • 财政年份:
    1990
  • 资助金额:
    $ 4.22万
  • 项目类别:
    Grant-in-Aid for Developmental Scientific Research (B)

相似海外基金

Simulation study of toroidal flow generation mechanism by electron cyclotron heating
电子回旋加热环形流产生机理的模拟研究
  • 批准号:
    18K03582
  • 财政年份:
    2018
  • 资助金额:
    $ 4.22万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Optimum injection of electron cyclotron heating
电子回旋加热的最佳注入
  • 批准号:
    16K18338
  • 财政年份:
    2016
  • 资助金额:
    $ 4.22万
  • 项目类别:
    Grant-in-Aid for Young Scientists (B)
Plasma control and confinement improvement with electron cyclotron heating
通过电子回旋加速器加热改进等离子体控制和限制
  • 批准号:
    19560825
  • 财政年份:
    2007
  • 资助金额:
    $ 4.22万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Formation and Sustainment of Spherical Tokamak by Electron Cyclotron Heating
电子回旋加热球形托卡马克的形成和维持
  • 批准号:
    13480125
  • 财政年份:
    2001
  • 资助金额:
    $ 4.22万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Multi-frequency electron cyclotron heating and current drive
多频电子回旋加热和电流驱动
  • 批准号:
    02402053
  • 财政年份:
    1990
  • 资助金额:
    $ 4.22万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (A)
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了