The destabilization of shear Alfvén waves (SAWs) associated with the loss of energetic particles generated by neutral beam injection (NBI) has been observed on several tokamaks [1‐5].Since the parti
本文研究了在1 T 磁场下的EAST(先进实验超导托卡马克)螺旋波等离子体稳态放电实验.两种右旋发散型和右旋盘绕发散型天线置于EAST 中心与纵场平行,由13.56 MHz射频电源激发,在射频电源功率1000 W,纵场为1 T,气压(氦气)为0.05-1 Pa 的条件下成功实现了螺旋波等离子体放电.放电阈值功率较低(<100 W)且射频电源与天线间匹配较好(反射功率为零).
As the neutron and γ-ray yields in high power takamaks,such as HL-2A and EAST,neutron energy and space distribution measurements will play a important role in thermonuclear fusion experiments to provi
The wetting property of water is very important due to its central role in many physics,biological,chemical,and technological systems.Since almost all the wetting processes occur on the surface of sol
We study the electronic structures of oxygen-deficient Ta2O5 by using first-principles calculations.Starting from the stable structure determined experimentally,we construct a model crystalline struct
Three-dimensional (3D) Dirac point,where two Weyl points overlap in momentum space,is usually unstable and hard to realize.Here we show,based on the first-principles calculations and effective model a
We investigate novel phases that emerge from the interplay of electron correlations and strong spin-orbit interactions.We focus on describing the topological semimetal,a three-dimensional phase of a m
In this paper,we present a narrow bandwidth source at the telecom wavelength based on type ⅡPPKTP crystal inside an optical cavity.Simultaneous resonances of the pump and the two down-converted fields