A photoelectron velocity map imaging spectrometer for experiments combining synchrotron and laser radiations |
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Authors: | O'Keeffe P Bolognesi P Coreno M Moise A Richter R Cautero G Stebel L Sergo R Pravica L Ovcharenko Y Avaldi L |
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Affiliation: | CNR-IMIP, Area della Ricerca di Roma 1, Monterotondo Scalo, Italy. |
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Abstract: | 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. |
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