弹丸和超声束流入对HL—1M装置边缘电场和等离子体旋转的影响

介绍了ＨＬ－１Ｍ在不同放电条件下这缘等离子体流和径向电场的测量。实验发现：在多发弹丸注入（ＭＰＩ）和超声束流注入（ＳＢＩ）期间，托卡马克等离子体边缘的径向电场Ｅ。发生变化，边缘等离子体的极向流剪切以及伴随着边缘扰动水平下降已观测到。     

HL—1M装置边缘等离子体流的测量

在托卡马克放电期间，低杂波（ＬＨＷ）注入，弹丸注入，分子束注入（ＭＢＩ） 气均不同程度地引赶快避部等离子体电位的快速变化，从而改变了电场分布，改变了边缘等离子体的流速和方向。     

HL—1M装置边缘参数和雷诺Xie强的径向分布

利用马赫／郎缪尔探针组测量HL－1M装置刮离层（SOL）和边缘静电雷诺Xie强，等离子体极向旋转，径向和极向电场的径向分布。在低杂波电流驱动（LHCD），超声分子束注入（SMBI），多发弹丸注入（MPI）和中性束注入（NBI）实验中，给出了雷诺Xie强和极向流的关系。结果指出，由于雷诺Xie强的径向变化，托卡马克等离子体边缘可以产生剪切极向流。     

HL—1M装置注入和加热实验的流速与电场测量

利用马赫－郎缪尔探针组研究了ＨＬ－１Ｍ装置刮离层和边缘等离子体流在欧姆放电、中性束注入、低杂波注入、离子回旋加热和电子回旋加热等情况下的极向流速、径向电场和极向电场的变化与分布,研究并讨论了它们对降低边缘粒子径向传输和改善等离子体约束性能的影响。     

HL-1M装置低杂波注入的边缘等离子体特性

本文利用多组马赫／郎缪尔探针测量HL-1M装置刮离层(SOL)和边缘的雷诺胁强，等离子体极向旋转，径向和极向电场的变化。在低杂波(LHW)注入实验中，改变低杂波驱动功充率，从而改变边缘电场，等离子体旋转速度和边缘静电雷诺胁强。结果指出，在托卡马克等离子体边缘，雷诺胁强的径向变化可以产生剪切极向流。     

HL—1M装置超声分子束注入的边缘等离子体结构

HL－1M装置的分子束流注入加料实验中,利用提高注入口气源的气压来提高超声分子束流的速度和增加入射的粒子密度,从而改变边缘电场,等离子体旋转速度和边缘静电雷诺Xie强。本文利用马赫／郎缪尔探针组测量HL－1M装置刮离层（SOL）和边缘雷诺Xie强,等离子体极向旋转,径向和极向电场的变化,表明了随着分子束流速度和粒子密度的增加,延伸了分子束流的注入深度。     

HL-1M装置边缘扰动和流速的实验研究

利用一组马赫探针研究HL-1M装置刮离层和边缘等离子体流在欧姆放电、壁硼化、偏压抽气孔栏、偏压电极、低混杂波电流驱动、电子回旋共振加热、弹丸注入、分子束注入、激光吹气和补充送气等情况下的平行流马赫数、离子饱和电流扰动、平行流速度剪切和极向流速度的分布。实验中发现局部等离子体电位快速变化，改变了电场分布，改变了边缘等离子体的流速和方向。从而改善了等离子体约束性能。     

HL—1M装置边缘把动和流速的实验研究

利用一组马赫探针研究ＨＬ－１Ｍ装置刮离层和边缘等离子体流在欧姆放电，壁硼化，偏压抽气孔栏，偏压电极，低混杂波电流驱动，电子回旋共振加热，弹丸注入，分子束注入，激光吹气和补充送气等情况下的平行流马赫数，离子饱和直流扰动，平行流速度剪切和极向流速度的分布。实验中发现局部等离子体电位快速变化，改变了电场分布，改变了边缘等离子体的流速和方向。     

HL—1M装置的八发弹丸注入系统及工程实验

八发弹丸注入系统自１９９６年投入ＨＬ－１Ｍ（中国环流器新一号）托卡马克加料实验并成功实现Ｈ２弹丸的八发连续注入等离子体。描述了此系统及其在液氮和液氦条件下分别以ＣＨ４和Ｈ２为丸料气的工程实验。压力高于５ＭＰａ的Ｈｅ为推进剂,弹丸速度达８００－１０００ｍ／ｓ。     

低温技术在受控核聚变实验中的应用

在中国环流器一号（ＨＬ－１）等离子体物理实验中，增加了弹丸注入和电子回旋共振加热系统。对低温技术在其中的应用情况，液氦输送系统，输液方法及氦气回收系统做了介绍。在一次等离子体物理实验中，总共使用液氦２７３３Ｌ。在弹丸注入系统中，使装置的等离子体密度提高了１～２倍。在装置上成功地实现了电子回旋共振加热，使等离子体电子温度增加３０％以上。     

Radial structure of low pressure rf capacitive discharges

This paper studies the glow intensity distribution of the discharge plasma against the tube radius and reports the radial profiles of electron temperature and plasma concentration in the rf capacitive discharge registered with a Langmuir probe. An abrupt increase of electron temperature and glow intensity near the tube wall in the weak-current α-mode of the rf capacitive discharge is revealed, the radial distribution of plasma concentration and ion flow to the electrodes possessing a maximum near the radial sheath boundary. In the γ-mode of the rf capacitive discharge the electron temperature decrease in the total plasma volume leads to an electric field weakening and the peak of the glow intensity near the tube wall vanishes. The radial sheath thickness in the α-mode of the rf capacitive discharge obtained with 2D simulation experiences pulsations during the rf field period, the changing radial electric field heating electrons and increasing the plasma concentration near the boundary of the radial sheath.     

Poloidal and toroidal flows in tokamak plasma near magnetic islands

Technical Physics Letters - The radial electric field and toroidal rotation of tokamak plasma near a magnetic island have been calculated. Outside the magnetic island, the radial electric field...     

Acceleration of Dusty Plasma Flow in Azimuthal Electric and Radial Magnetic Fields

Technical Physics Letters - In the framework of the model of cold hydrodynamics, acceleration of the flow of dusty plasma in azimuthal electric and radial magnetic fields has been studied. The...     

Control of particle-deposition pattern in a sessile droplet by using radial electroosmotic flow

In this technical note, we report an experimental investigation of radial electroosmotic flow (EOF) as an effective means for controlling particle-deposition pattern inside an evaporating droplet, which has a potential application to biochemistry and analytical chemistry especially for sample preparation steps. Using the microelectrode, which consists of the circular electrode around the rim of droplet and the point electrode at the center of the droplet, we generate the radial electric field at the bottom of the electrolyte droplet. The electric field developed between the center electrode and the circular electrode causes a radial EOF in the vicinity of the bottom of the droplet. By changing the applied voltage, the strengths and directions of the radial EOF are controlled at one's own discretion, and thus, we can modify the solute distribution inside the droplet during evaporation. When the radial EOF compensates the natural outward flow at a suitable choice of electrical voltage, the particles are uniformly distributed at the entire droplet spot. Moreover, with strong radial EOF, all the particles are deposited at the center rather than at the rim. We also carry out a simple theoretical investigation of flow field inside the droplet with Smoluchowski slip velocity condition to show how the particles travel during evaporation.     

ICP等离子体源天线设计

感应耦合等离子体技术以其低气压下产生高密度等离子体的能力及良好的可扩展性成为微细加工中的重要的加工技术之一.本文提出了一种新型的三段式线圈的设计方法,对激发电场进行了数值计算.结果表明设计的天线能够在径向和方向角方向上产生均匀性良好的电场,耦合效率较高.     

Effects of uniform radial electric field on the MHD heat and fluid flow due to a rotating disk

The flow and heat transfer of an incompressible electrically conducting fluid over a rotating infinite disk are studied in the present paper. The disk finds itself subjected to a uniform normal magnetic field. The particular interest lies in searching for the effects of an imposed radial electric field on the behavior of the physical flow. The gradient of an electric potential generated on the disk penetrates through the fluid and greatly influences the boundary layer formation. The presented model representing the fluid motion is a general case since it reduces to the traditional Karman’s viscous pump when the electric potential is ignored. The governing Navier–Stokes and Maxwell equations of the constructed model together with the energy equation are converted into self-similar forms using suitable similarity transformations. The flow and thermal boundary layers are shown to be much affected by the presence of a uniform radial electric parameter. Some parameters of fundamental physical significance such as the surface shear stresses in the radial and tangential directions and the heat transfer rate are numerically evaluated. The effects of electric conductivity of the disk on the flow and forced convection heat transfer are further discussed.     

气体辅助注射成型工艺及充模过程CAE分析

描述了气体辅助注射成型的工艺过程及熔体充填和气体穿入的数学模型，采用有限元／有限差分／控制体积法计算充填阶段的压力场和温度场，确定两类移动边界—熔体前沿和熔体／气体边界。并对典型制件进行模拟以验证模型的可行性。