期刊
APPLIED SCIENCES-BASEL
卷 10, 期 21, 页码 -出版社
MDPI
DOI: 10.3390/app10217882
关键词
X-ray probe; molecular dynamics; gas phase electron spectroscopy
类别
资金
- German Federal Ministry for Education and Research (BMBF) under 'Verbundforschungsprojekt [05K16IP10]
- Lichtenberg Professorship of the Volkswagen-Stiftung
- DFG [GU 1478/1-1]
- Swedish Research Council
- Knut and AliceWallenberg Foundation, Sweden
- Deutsche Forschungsgemeinschaft
- Open Access Publishing Fund of University of Potsdam
We present a highly flexible and portable instrument to perform pump-probe spectroscopy with an optical and an X-ray pulse in the gas phase. The so-called URSA-PQ (German for 'Ultraschnelle Rontgenspektroskopie zur Abfrage der Photoenergiekonversion an Quantensystemen', Engl. 'ultrafast X-ray spectroscopy for probing photoenergy conversion in quantum systems') instrument is equipped with a magnetic bottle electron spectrometer (MBES) and tools to characterize the spatial and temporal overlap of optical and X-ray laser pulses. Its adherence to the CAMP instrument dimensions allows for a wide range of sample sources as well as other spectrometers to be included in the setup. We present the main design and technical features of the instrument. The MBES performance was evaluated using Kr M4,5NN Auger lines using backfilled Kr gas, with an energy resolution Delta E/E approximately equal to 1/40 in the integrating operative mode. The time resolution of the setup at FLASH 2 FL 24 has been characterized with the help of an experiment on 2-thiouracil that is inserted via the instruments' capillary oven. We find a time resolution of 190 fs using the molecular 2p photoline shift and attribute this to different origins in the UV-pump-the X-ray probe setup.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据