论文标题
测量超稀释气体传播对检测器尺寸的依赖性
Measurement of the dependence of ultra diluted gas transmittance on the size of the detector
论文作者
论文摘要
我们表明，超薄气体的测量光透射率取决于检测器的大小。为此，我们进行了一项实验，该实验与一对探测器并行测量的透射率从2 $ $ m到200 $μ$ m不等。使用了可调二极管激光吸收光谱型系统。 $ \ sim $ 1E-2 MBAR水蒸气在NIR吸收线上的透射率$λ$ = 1368.60 nm，使用位于300 L真空室内的60 m长的多通电池测量。实验的结果表明，使用较小的检测器进行测量时，较高的透射率。差异达到1.23 $ \ pm $ 0.1％，大于0，> 5 $σ$统计显着性。从定性上讲，它与最近开发的稀薄气体光传输模型一致，这些模型考虑到单个气体颗粒波函数的量子机械效应。
We show that measured optical transmittance of an ultra thin gas depends on the detector size. To this end we conducted an experiment that compares transmittances measured in parallel with a pair of detectors with different diameters ranging from 2 $μ$m to 200 $μ$m. A Tunable Diode Laser Absorption Spectroscopy type system was used. Transmittance of $\sim$1e-2 mbar water vapor on NIR absorption line $λ$=1368.60 nm was measured using a 60 m long multi-pass cell placed inside the 300 l vacuum chamber. The result of the experiment shows higher transmittances when the measurement is performed using smaller detectors. The difference reaches as much as 1.23 $\pm$0.1 %, which is greater than 0 with >5$σ$ statistical significance. Qualitatively it is in agreement with the recently developed model of thin gas optical transmittance taking into account the quantum mechanical effects of spreading of the wave functions of individual gas particles.
