Quantitative chemical analysis based on X-ray photoelectron spectroscopy (XPS) includes elemental identification and, in many cases, quantification of the chemical states of active surface atoms. The two main parts of the analysis are subtracting the inelastic background and fitting a synthetic lineshape to the data. The analysis of transition metal oxides is typically based on their core level...

The ultraviolet photoelectron spectrum of F2O was recorded with a higher resolution than previously published. New vibrational structure was observed in the second and third bands. Near state-of-the-art molecular orbital calculations were performed on the X̃ A1 state of F2O and the X̃ B1 , B2 , A1 , and A2 state of F2O , and their potential energy functions were computed. Spectral simulations bas...

We report the photoelectron spectra of small IBr-(CO2)n cluster anions (n=0-3). The vibrational state-resolved spectrum of IBr- permits reliable identification of the origins of the excited A' 3Pi2 and A 3Pi1 states of neutral IBr through a high-quality Franck-Condon spectral simulation. As a result, we directly determine several important spectroscopic parameters: the adiabatic electron affini...

We report the 364-nm photoelectron spectrum of HC(4)N(-). We observe electron photodetachment from the bent X(2)A" state of HC(4)N(-) to both the near-linear X(3)A" and the bent ã (1)A' states of neutral HC(4)N. We observe an extended, unresolved vibrational progression corresponding to X(3)A" ← X(2)A" photodetachment, and we measure the electron affinity (EA) of the X(3)A" state of HC(4)N to b...

Tetracyanoquinodimethane (TCNQ) is widely used as an electron acceptor to form highly conducting organic charge-transfer solids. Surprisingly, the electron affinity (EA) of TCNQ is not well known and has never been directly measured. Here, we report vibrationally resolved photoelectron spectroscopy (PES) of the TCNQ(-) anion produced using electrospray and cooled in a cryogenic ion trap. Photoe...

Motivated by the discrepancies in recent experimental and theoretical studies of photodetachment from isolated model chromophores of the green fluorescent protein (GFP), this study reports calculations of the electron detachment energies and photoelectron spectra of the phenolate and deprotonated p-hydroxybenzylidene-2,3-dimethylimidazolinone (HBDI) anions. The spectra were computed using doubl...

The 266 nm photoelectron spectra of CN-, NCO-, and NCShave been recorded with a pulsed time-of-flight photoelectron spectrometer. The photoelectron spectrum of CNhas also been recorded at 213 nm revealing transitions to the A 211 state as well as the ground X ‘Zf state of the CN radical. The following adiabatic electron affinities (EAs) are determined: EA(CN) =3.862*0.004 eV, EA(NC0) =3.609*0.0...

The photoelectron spectrum of the oxyallyl (OXA) radical anion has been measured. The radical anion has been generated in the reaction of the atomic oxygen radical anion (O(•-)) with acetone. Three low-lying electronic states of OXA have been observed in the spectrum. Electronic structure calculations have been performed for the triplet states ((3)B(2) and (3)B(1)) of OXA and the ground doublet...

Closed analytical expressions for the probability of multiphoton ionization of atoms and ions by a time-varying electric field %(t) are obtained by the imaginary time method. These expressions apply for arbitrary values of the Keldysh parameter γ. The dependence of the ionization probability and the photoelectron momentum spectrum on the shape of an ultrashort laser pulse is considered. © 2001 ...

A. Kivimaeki, Patrick Norman, M. Coreno, M. de Simone, C. Grazioli, R. Totani, B. Ressel, H. Ottosson and C. Puglia, Use of two-dimensional photoelectron spectroscopy in the decomposition of an inner-shell excitation spectrum broadened by super-Coster-Kronig decay, 2013, Physical Review A. Atomic, Molecular, and Optical Physics, (88), 6, 062502. http://dx.doi.org/10.1103/PhysRevA.88.062502 Copy...