Double Photoionization of Aromatic Hydrocarbons
نویسنده
چکیده
Electron correlations can be found in various fields of physics whenever we have to go beyond the independent particle model. A convenient method to study electron correlations in gas-phase atoms and molecules is to measure the probability to remove two electrons simultaneously with a single photon (called double photoionization) from the sample. Because a single photon can interact with only one electron, the removal of two electrons is due to electron correlations.
منابع مشابه
Abstract Submitted for the DAMOP11 Meeting of The American Physical Society Double Photoionization of Pyrrole, Furan, and Thiophene1 EMILY
Submitted for the DAMOP11 Meeting of The American Physical Society Double Photoionization of Pyrrole, Furan, and Thiophene1 EMILY MAKOUTZ2, Dept. of Physics, Univ. of Wisconsin–La Crosse, TIM HARTMAN, NARAYANA APPATHURAI, RALF WEHLITZ, Synchrotron Radiation Center, Univ. of Wisconsin–Madison — We have studied the double-to-single photoionization ratio for the aromatic molecules pyrrole, furan, ...
متن کاملDetermination of polycyclic aromatic hydrocarbons in sediment by liquid chromatography-atmospheric pressure photoionization-mass spectrometry.
We describe a method for the simultaneous determination of 12 kinds of polycyclic aromatic hydrocarbons (PAHs) in sediment based on liquid chromatography-atmospheric pressure photoionization-mass spectrometry (LC/APPI/MS). The method consists of PAH extractions by ultrasonics, clean-up by a solid-phase extraction procedure and determination by LC/APPI/MS. The limits of the determination for PAH...
متن کاملFast analysis of 29 polycyclic aromatic hydrocarbons (PAHs) and nitro-PAHs with ultra-high performance liquid chromatography-atmospheric pressure photoionization-tandem mass spectrometry
Polycyclic aromatic hydrocarbons (PAHs) and nitro-PAHs are ubiquitous in the environment. Some of them are probable carcinogens and some are source markers. This work presents an ultra-high performance liquid chromatography-atmospheric pressure photoionization-tandem mass spectrometry (UHPLC-APPI-MS/MS) method for simultaneous analysis of 20 PAHs and nine nitro-PAHs. These compounds are separat...
متن کاملFragment-Free Mass Spectrometric Analysis with Jet Cooling/VUV Photoionization.
We show that it is possible to obtain fragment-free mass spectra of large molecules by a combination of laser desorption, jet cooling, and VUV single-photon photoionization. The ability to obtain parent molecular masses is particularly important for the analysis of mixtures, such as combinations of fully saturated hydrocarbons. By varying the cooling conditions, we can also achieve partial frag...
متن کاملDouble Ionization of Quaterrylene (C40H20) in Water-Ice at 20 K with Lyr (121.6 nm) Radiation
Polycyclic aromatic hydrocarbon (PAH) molecules undergo facile ionization in cryogenic water-ices resulting in near quantitative conversions of neutral molecules to the corresponding singly charged radical cations. Here we report, for the first time, the production and stabilization of a doubly ionized, closed shell PAH in water-ice. The large PAH quaterrylene (QTR, C40H20) is readily photoioni...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2009