Optical electron polarimetry with heavy noble gases.
Optical electron polarimetry with heavy noble gases.
复制标题
使用重惰性气体进行光学电子极化测定。
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
Wijayaratna
中科院分区：
文献类型：
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作者：
Gay;Furst;Trantham;Wijayaratna
测量了惰性气体He、Ne、Ar、Kr、Xe在极化电子碰撞激发下的荧光偏振度。在他中，${3}^{3}$Pensureath{
研究了重惰性气体中的${mathit{np}}^{5}$(n+1)p${mathrm{}}^{3}$${mathit{D}}_{3}$ensuremath{跃迁。
对ightarrow}${mathit{np}}^{5}$(n+1)s${mathrm{}}^{3}$${mathit{P}}_{2}$跃迁进行了分析。我们研究了这些跃迁作为有效的光学电子偏振测量的候选者，发现由于它们更大的激发截面和分析能力，重惰性气体优于以前被用作偏振靶的He。讨论了有关光学电子偏振技术的实现和精度的几个问题。版权所有：1996年美国物理学会。
We have measured the polarization of fluorescence emitted by the noble gases He, Ne, Ar, Kr, and Xe following impact excitation by polarized electrons. In He, the ${3}^{3}$Pensuremath{
ightarrow}${2}^{3}$S transition was studied; in the heavy noble gases the ${mathit{np}}^{5}$(n+1)p${mathrm{}}^{3}$${mathit{D}}_{3}$ensuremath{
ightarrow}${mathit{np}}^{5}$(n+1)s${mathrm{}}^{3}$${mathit{P}}_{2}$ transitions were analyzed. We investigated these transitions as candidates for efficient optical electron polarimetry and found that, because of their larger excitation cross sections and analyzing power, the heavy noble gases are superior to He, which had been used previously as a polarimetric target. Several issues with regard to the implementation and accuracy of optical electron polarimetric techniques are discussed. extcopyright{} 1996 The American Physical Society.