O'Keeffe P, Bolognesi P, Coreno M, Moise A, Richter R, Cautero G, Stebel L, Sergo R, Pravica L, Ovcharenko Y, Avaldi L
CNR-IMIP, Area della Ricerca di Roma 1, Monterotondo Scalo, Italy.
Rev Sci Instrum. 2011 Mar;82(3):033109. doi: 10.1063/1.3563723.
A velocity map imaging/ion time-of-flight spectrometer designed specifically for pump-probe experiments combining synchrotron and laser radiations is described. The in-house built delay line detector can be used in two modes: the high spatial resolution mode and the coincidence mode. In the high spatial resolution mode a kinetic energy resolution of 6% has been achieved. The coincidence mode can be used to improve signal-to-noise ratio for the pump-probe experiments either by using a gate to count electrons only when the laser is present or by recording coincidences with the ion formed in the ionization process.
本文描述了一种专门为结合同步辐射和激光辐射的泵浦-探测实验设计的速度映射成像/离子飞行时间光谱仪。内部构建的延迟线探测器可用于两种模式：高空间分辨率模式和符合模式。在高空间分辨率模式下，已实现6%的动能分辨率。符合模式可用于通过以下方式提高泵浦-探测实验的信噪比：要么使用门控仅在激光存在时对电子进行计数，要么记录与电离过程中形成的离子的符合事件。
