特征(标识)辐射(characteristic radiation) 电子打靶核时打出x射线,可分为两部分,一部分呈现山丘模型这是轫致辐射产生的x射线;一是叠在连续谱上的尖峰,这就是特征(标识)辐射,特征辐射原子内部,电子从一个轨道跃迁到另一个轨道上产生的。可作为元素的标识
特征辐射(characteristic radiation) 特征辐射(放射)或称标识辐射(characteristic radiation)是高速电子冲击靶物质内层轨道电子而产生的。
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当时他们用这种激光来激发并电离那些被火焰的高温裂解出来的原子,目的是测量不同火焰的特征辐射。
They were using the laser to excite and ionize the atoms liberated by the heat of the flame in order to measure the characteristic emissions of different flames.
“如果我们确实发现了些由碰撞产生的背景微波辐射特征,尽管这仍然很难给予解释,但它已经是个巨大且重要的进展。”他说道。
"If indeed we find some features in the CMB which are well fitted by a collision but are hard to explain otherwise, this would be a tremendously important development," he says.
因此,位于内罗毕的世界农林中心已经着手对10万份非洲土壤样本的辐射特征以及相应的耕种潜力进行分类整理了。
As a consequence, the World Agroforestry Centre in Nairobi has begun cataloguing the radiation signature-and thus agricultural potential-of about 100, 000 samples of African soils.
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