Jordan I, Huppert M, Brown M A, van Bokhoven J A, Wörner H J
Laboratory of Physical Chemistry, ETH Zurich, Vladimir-Prelog-Weg 2, 8093 Zurich, Switzerland.
Laboratory for Surface Science and Technology, Department of Materials, ETH Zurich, Vladimir-Prelog-Weg 5, 8093 Zurich, Switzerland.
Rev Sci Instrum. 2015 Dec;86(12):123905. doi: 10.1063/1.4938175.
A new apparatus for attosecond time-resolved photoelectron spectroscopy of liquids and gases is described. It combines a liquid microjet source with a magnetic-bottle photoelectron spectrometer and an actively stabilized attosecond beamline. The photoelectron spectrometer permits venting and pumping of the interaction chamber without affecting the low pressure in the flight tube. This pressure separation has been realized through a sliding skimmer plate, which effectively seals the flight tube in its closed position and functions as a differential pumping stage in its open position. A high-harmonic photon spectrometer, attached to the photoelectron spectrometer, exit port is used to acquire photon spectra for calibration purposes. Attosecond pulse trains have been used to record photoelectron spectra of noble gases, water in the gas and liquid states as well as solvated species. RABBIT scans demonstrate the attosecond resolution of this setup.
描述了一种用于液体和气体阿秒时间分辨光电子能谱的新装置。它将液体微喷射源与磁瓶光电子能谱仪以及主动稳定的阿秒光束线相结合。光电子能谱仪允许对相互作用室进行排气和抽气，而不会影响飞行管中的低压。这种压力分离是通过一个滑动撇渣板实现的，该板在其关闭位置有效地密封飞行管，并在其打开位置起到差动抽气阶段的作用。连接到光电子能谱仪出口端口的高次谐波光子能谱仪用于获取用于校准目的的光子能谱。阿秒脉冲序列已被用于记录稀有气体、气态和液态水以及溶剂化物种的光电子能谱。RABBIT扫描证明了该装置的阿秒分辨率。
