Photoelectron photoion coincidence spectroscopy
High Quality Content by WIKIPEDIA articles! Photoelectron photoion coincidence spectroscopy, PEPICO for short, is a combination of photoionization mass spectrometry and photoelectron spectroscopy. Gas phase sample, i.e. isolated molecules are ionized by incident vacuum ultraviolet (VUV) radiation. In the ensuing photoionization, a cation and a photoelectron are formed for each sample molecule. The mass of the photoion is determined by time-of-flight mass spectrometry, whereas, in current setups, photoelectrons are typically velocity map imaged onto a position sensitive detector. Electron times-of-flight are three orders of magnitude smaller than ion ones, which means that the electron detection can be used as a time stamp for the...
ISBN: 978-5-5146-9765-6