Brightness enhancement of slow positron beams
Brightness enhancement of slow positron beams
复制标题
慢速正电子束的亮度增强
DOI：
10.1007/bf00899716
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发表时间：
1980
期刊：
影响因子：
--
通讯作者：
A. Mills
中科院分区：
文献类型：
--
作者：
A. Mills
慢正电子束的亮度可以通过重复的慢化、加速和聚焦阶段而显著增强。现有的数据表明，在每一阶段之后，源斑面积应该减少10−4，强度只有适度的损失。用这种技术可以制造出具有非常小的角发散度的光束，这将有助于通过正电子衍射和显微镜来表征表面。利用这种光束，我们可以设想研究新的奇异系统，如等离子体和正电子素分子。
The brightness of slow positron beams can be enhanced significantly by repeated stages of moderation, acceleration and focusing. Presently available data suggest that the source spot area should decrease by 10−4 after each stage with only a modest loss of intensity. Beams with very small angular divergence, which could be made with this technique, would be useful for characterizing surfaces by positron diffraction and microscopy. Using such beams it is possible to envision the study of new exotic systems such as thee+-e− plasma and the positronium molecule.