Elucidation of electron transport control by using the magnetic filter and enhancement of HィイD1-ィエD1DィイD1-ィエD1 production in high frequency negative ion source

阐明使用磁过滤器控制电子传输并增强高频负离子源中 HiD1-D1D1-D1 的产生

• 批准号: 09480093
• 负责人: FUKUMASA Osamu
• 金额: $ 5.82万
• 依托单位: Yamaguchi University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09480093/
• 关键词: NBI heating; deuterium negative ion source; volume production; magnetic filter; ECR negative ion source; RF negative ion source; isotope effect; 振動励起分子

Production and control of both electron cyclotron resonance (ECR) plasmas and radio-frequency (RF) plasmas for negative ion sources have been studied. Findings are as follows :(1) HィイD1-ィエD1 volume production is confirmed in ECR plasmas although the effect of the magnetic filter (MF) for controlling plasma parameters is different from that in dc discharge plasmas.(2) In RF plasmas, Te is hardly reduced across the MF. The rf oscillating potentials are observed in the source region and may affect the role of MF for controlling plasma parameters.(3) Production and control of dc discharge plasmas for various gas species (i.e. Ar, NィイD22ィエD2, He and HィイD22ィエD2) is studied. Control of plasma parameters with the MF depends on the magnetic field intensity of the MF and gas species (i.e. ions).(4) By executing the one-dimensional electrostatic particle simulation, the ion beam instability is observed in the asymmetric plasmas divided by the MF.

本文研究了负离子源的电子回旋共振（ECR）等离子体和射频（RF）等离子体的产生和控制。结果表明：（1）ECR等离子体中H_xD_1-H_xD_1的大量产生得到证实，尽管磁过滤器（MF）对等离子体参数的控制效果与直流放电等离子体中的不同。(2)在RF等离子体中，Te在MF上几乎不被还原。在源极区观察到射频振荡电位，并可能影响MF控制等离子体参数的作用。(3)本文研究了各种气体（Ar，N_（22）Ar_（22）D_2，He和H_（22）H_2O_（22）D_2）的直流放电等离子体的产生和控制。用MF控制等离子体参数取决于MF的磁场强度和气体种类（即离子）。(4)通过一维静电粒子模拟，观察到离子束在被磁场分割的非对称等离子体中的不稳定性。

项目成果

Osamu Fukumasa: "Parametric Study of Negative Ion Production in Cesium Seeded Hydrogen Plasmas"71, 2. 1234-1236 (2000)

Osamu Fukumasa：“铯种子氢等离子体中负离子产生的参数研究”71, 2. 1234-1236 (2000)

O.Fukumasa: "Negative Ion Volume Production in Electron Cyclotron Resonance Hydrogen Plasmas"Jpn.J.Appl.Phys.. 38・7B. 4581-4585 (1999)

O.Fukumasa：“电子回旋共振氢等离子体中的负离子量产生”Jpn.J.Appl.Phys.. 38・7B（1999）

Osamu Fukumasa: "Electron energy dependence of vacuum ultraviolet emission and H^- production in a low-pressure" Review of Scientific Instruments. 69・2. 995-997 (1998)

Osamu Fukumasa：“真空紫外发射和 H^- 产生的电子能量依赖性”科学仪器评论 69・2（1998）。

Hiroshi Naitou: "Beam Instability Excited by the Magnetic Filter"Rev. Sci. Instrum. 71, 2. 875-876 (2000)

Hiroshi Naitou：“磁过滤器激发的光束不稳定性”Rev。

O.Fukumasa: "Pulse Modulation for Plasma Parameter Control and Optimization of Volume H^-Ion Source"Rev. Sci. Instrum.. 69・2. 938-940 (1998)

O.Fukumasa：“等离子体参数控制和体积 H^-离子源的优化”Rev. 938-940 (1998)