In the improved confinement experiments, the tendency for helium accumulation to increase has been found, and the peak of radial profile for helium lineemission intensity moves inward.
在改善约束实验中，发现氦有积累增加的趋势，氦谱线发射强度径向分布峰向内移。
2
Even with XMM-Newton's sensitivity, the discovery was only possible because the filament is along the line of sight, concentrating the emission from the entire filament in a small region of the sky.