Study of atomic processes involving excited-atoms for new plasma diagnostics

用于新等离子体诊断的涉及激发原子的原子过程研究

• 批准号: 16540456
• 负责人: YAMADA Ichihiro
• 金额: $ 2.05万
• 依托单位: National Institute for Fusion Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16540456/
• 关键词: Highly charged ion; Excited atom; Laser excitation; Classical trajectory Monte Carlo Simulation; Electron transfer process; Electron capture process; アルカリ原子; 半導体レーザ; 電子捕獲; 半導体レーザー; 電子移行; アルカリ原子源

In the research project, we investigated atomic processes involving excited atoms in plasmas for understanding of fundamental atomic processes in fusion plasmas and developing of new plasma diagnostics. Especially, we focused on highly charged ion-excited atom collisions that occur most frequently in fusion plasmas.In theoretical studies, we developed a classical trajectory Monte Carlo simulation code, named nCTMC code, for the collisions of highly charged ions with quasihydrogenic atoms. The nCTMC code is based on pure classical theory, however it is very flexible and can be applied to wide range of atomic collision processes. By using this code, classical physical quantities, such as energy and cross section, can be obtained. We calculated total and differential cross section for electron transfer processes of highly charged ions with atomic hydrogen and quasihydrogenic atoms. Comparison of the results and available data were made.In experimental studies, we have developed a new excited atom source. Two kinds of alkali-metal atom sources were developed and used in the studies. We have measured total electron transfer cross sections of the collisions of highly charged iodine ions with ground-state alkali-metal atoms (Na, K, Rb, Cs). I order to excite target atoms, we use a semiconductor lasers. After many checks and tests, the excited atom source has been almost perfected.Many results obtained in the research project may open up a new field in atomic collision researches and plasma physics on atomic processes involving excited atoms.

在研究项目中，我们研究了涉及等离子体中激发原子的原子过程，以了解融合等离子体中的基本原子过程和开发新的等离子体诊断。尤其是，我们专注于高电荷的离子原子碰撞，这些原子碰撞最常在融合等离子体中发生。在理论研究中，我们开发了一种经典的轨迹蒙特卡洛模拟代码，名为NCTMC代码，该代码是NCTMC代码，该代码是由于高度带电的离子与准原子原子的碰撞。 NCTMC代码基于纯经典理论，但是它非常灵活，可以应用于广泛的原子碰撞过程。通过使用此代码，可以获得经典的物理量，例如能量和横截面。我们计算了具有原子氢和准原子的高电荷离子的电子传递过程的总截面和差分横截面。进行了结果和可用数据的比较。在实验研究中，我们开发了一种新的激发原子来源。在研究中开发并使用了两种碱金属原子来源。我们已经测量了高电荷碘离子与地面碱金属原子（NA，K，RB，CS）的碰撞的总电子转移横截面。我为了激发目标原子，我们使用半导体激光器。经过多次检查和测试，激发的原子源几乎已经完善了。在研究项目中获得的许多结果可能会为原子研究和血浆物理学开设一个有关涉及激发原子的原子过程的新领域。

项目成果

Excited Atomic Processes as Fundamental Researches for New Plasma Diagnostic

激发原子过程作为新等离子体诊断的基础研究

• 发表时间: 2006
• 期刊: NIFS Ann.Rep.2005-2006
• 作者: T.Ishikawa;K.Tanaka;I.Yamada et al.;H.A.Sakaue et. al.;K.Iiyama et. al.
• 通讯作者: K.Iiyama et. al.

Study on Various Atomic Processes of Impurity Highly Charged Ions by Versatile Ion Sources'

多功能离子源研究杂质高电荷离子的各种原子过程

• 发表时间: 2006
• 期刊: NIFS Ann. Rep. 2005-2006
• 作者: S. Ohtani;et. al.
• 通讯作者: et. al.

Design, Construction, and Performance of a Composite Mirror for Collecting Thomson Scattered Light from the Large Helical Device Plasma

用于收集大型螺旋装置等离子体汤姆逊散射光的复合镜的设计、构造和性能

• 发表时间: 2004
• 期刊: Rev.Sci.Instrum. Vol.72, No.10, Part II
• 作者: W. Matsuda;et. al.;H.A.Sakaue et al.;I.Yamada et al.;K.Narihara et al.
• 通讯作者: K.Narihara et al.

Study on Various Atomic Processes of Impurity Highly Charged Ions by Versatile Ion Sources

多功能离子源研究杂质高电荷离子的各种原子过程

• 发表时间: 2006
• 期刊: NIFS Ann.Rep.2005-2006
• 作者: T.Ishikawa;K.Tanaka;I.Yamada et al.;H.A.Sakaue et. al.;K.Iiyama et. al.;S.Ohtani et. al.
• 通讯作者: S.Ohtani et. al.

A Study of Charge Exchange Processes by Collision with Excited Atoms

激发原子碰撞电荷交换过程的研究

• 发表时间: 2005
• 期刊: NIFS Ann.Rep.2004-2005
• 作者: S. Ohtani;et. al.;W. Matsuda;H.A.Sakaue et al.;Y.Miyake st al.;H.A.Sakaue et al.;W.Matsuda et. al.
• 通讯作者: W.Matsuda et. al.