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聚变等离子体研究需要光强很弱的真空紫外区的光谱测量,也就需要有一种新型的探测器来代替传统的感光板。应用微通道板荧光屏组件作真空紫外光谱象增强器便能基本上解决问题。它具有如下的优点:(1)一次拍摄就可以得到一张等离子体的光谱照片。而用感光板摄谱,则需要成百上千次放电拍照才能得到一张等离子体光谱积累照片;(2)能把不可见的真空紫外光谱转换成可见光谱,可以用肉眼直接进行观察,便于谱仪的定位和调节;(3)摄谱在真空室外部进行,每次取片不须破坏真空;(4)同时可显示一定波长范围的谱线,不象单通道电子倍增管和光电倍增管那样,一只管子只能测量一条谱线。因此,用微通道板象增强器可大大地节约放电能源和时间。
Fusion plasma research requires the spectral measurement of a very weak vacuum ultraviolet region, and a new type of detector is needed to replace the traditional one. The use of microchannel plate screen components for vacuum ultraviolet spectroscopy enhancer can basically solve the problem. It has the following advantages: (1) a shot can get a plasma spectral photos. The plate with the photosensitive plate, you need to take hundreds of thousands of discharge shots to get a plasma spectrum to accumulate photos; (2) to the invisible vacuum ultraviolet spectrum into visible spectrum, you can directly observe with the naked eye, easy Spectrometer positioning and adjustment; (3) spectroscopy in the vacuum chamber outside, each time the film without breaking the vacuum; (4) at the same time can display a certain wavelength range of the spectrum, unlike the single electron multiplier tube and photomultiplier Tube, a tube can only measure a spectrum. Therefore, the microchannel plate image intensifier can greatly save energy and time of discharge.