Three-dimensional (3D) moment imaging with a USB3 oscilloscope.

Three-dimensional (3D) moment imaging with a USB3 oscilloscope.
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使用 USB3 示波器进行三维 (3D) 矩成像。

DOI:
10.1063/5.0155903
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发表时间:
2023
期刊:
The Review of scientific instruments
影响因子:
--
通讯作者:
Wen Li
Wen Li
中科院分区:
--
文献类型:
--
作者:
Yasashri Ranathunga;T. Olowolafe;S. Lee;Wen Li

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我们报告了一种最近开发的3D动量成像技术的新实现[Lee等人。J·化学。太棒了。141,221101(2014年)]。以前在设置中使用的高速数字化仪被便携式USB3示波器取代。开发了一种新的触发方案,以抑制触发抖动,并使来自摄像机和示波器的信号同步。在速度图成像仪上对2,5-二羟基苯甲酸的激光解吸/电离进行了研究,表征了装置的性能。在测量飞行时间时,获得了∼60皮秒的时间分辨率,计数速率为∼1 10 kHz,与使用高速数字转换器的系统相当。新的设置为高性能3D动量成像技术提供了极大的便携性和更广泛的可及性。
We report a new implementation of a recently developed 3D momentum imaging technique [Lee et al. J. Chem. Phys. 141, 221101 (2014)]. The previously employed high-speed digitizer in the setup is replaced by a portable USB3 oscilloscope. A new triggering scheme was developed to suppress trigger jitters and to synchronize the signals from a camera and the oscilloscope. The performance of the setup was characterized in the study of laser desorption/ionization of 2,5-dihydroxybenzoic acid on a velocity map imaging apparatus. A ∼60 picosecond time resolution in measuring time-of-flight is achieved with a count rate of ∼1 kHz, which is comparable to the system using high-speed digitizers. The new setup affords great portability and wider accessibility to the high-performing 3D momentum imaging technique.
皮秒与飞秒:所有激光解吸电离作用都相同吗?
DOI: 10.1021/acs.jpcc.2c06573
发表时间: 2022
期刊: The Journal of Physical Chemistry C
影响因子: --
作者:
Stewart, Gabriel A.;Debrah, Duke;Ranathunga, Yasashri;Olowolafe, Temitayo A.;Schlegel, H. Bernhard;Lee, Suk Kyoung;Li, Wen
通讯作者: Li, Wen
DOI: 10.1088/1361-6455/ac4b42
发表时间: 2022
期刊: Molecular and Optical Physics
影响因子: --
作者:
Basnayake, Gihan;Ranathunga, Yasashri;Lee, Suk Kyoung;Li, Wen
通讯作者: Li, Wen