首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Multimass velocity-map imaging with the pixel imaging mass spectrometry (PImMS) sensor: An ultra-fast event-triggered camera for particle imaging
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Multimass velocity-map imaging with the pixel imaging mass spectrometry (PImMS) sensor: An ultra-fast event-triggered camera for particle imaging

机译:使用像素成像质谱(PImMS)传感器的多质量速度图成像:用于粒子成像的超快速事件触发相机

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摘要

We present the first multimass velocity-map imaging data acquired using a new ultrafast camera designed for time-resolved particle imaging. The PImMS (Pixel Imaging Mass Spectrometry) sensor allows particle events to be imaged with time resolution as high as 25 ns over data acquisition times of more than 100 μs. In photofragment imaging studies, this allows velocity-map images to be acquired for multiple fragment masses on each time-of-flight cycle. We describe the sensor architecture and present bench-testing data and multimass velocity-map images for photofragments formed in the UV photolysis of two test molecules: Br_2 and N,N-dimethylformamide.
机译:我们展示了使用专为时间分辨粒子成像设计的新型超快相机获得的第一批多质量速度图成像数据。 PImMS(像素成像质谱)传感器允许在超过100μs的数据采集时间内以高达25 ns的时间分辨率对粒子事件进行成像。在光碎片成像研究中,这允许在每个飞行时间周期内获取多个碎片质量的速度图图像。我们描述了传感器的体系结构,并给出了在两个测试分子:Br_2和N,N-二甲基甲酰胺的UV光解过程中形成的光碎片的实验台测试数据和多质量速度图图像。

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