Comment on “Photoelectron angular distributions as a probe of alignment in a polyatomic molecule: Picosecond time- and angle-resolved photoelectron spectroscopy of S1 p-difluorobenzene” [J. Chem. Phys. 111, 1438 (1999)]

2013 ◽  
Vol 139 (11) ◽  
pp. 117101 ◽  
Author(s):  
Jonathan Midgley ◽  
Julia A. Davies ◽  
Katharine L. Reid
Keyword(s):  
Photoelectron Spectroscopy ◽  
Polyatomic Molecule ◽  
Chem Phys ◽  
Angular Distributions ◽  
Photoelectron Angular Distributions

Photoelectron Angular Distributions Of Ultrathin NI/CU(001) Films

1996 ◽  
Vol 437 ◽  
Author(s):  
G.J. Mankey ◽  
K. Subramanian ◽  
R.L. Stockbauer ◽  
R.L. Kurtz
Keyword(s):  
Photoelectron Spectroscopy ◽  
Periodic Potential ◽  
Electronic States ◽  
Linear Dichroism ◽  
Angular Distributions ◽  
X Ray ◽  
Photoelectron Diffraction ◽  
Ellipsoidal Mirror ◽  
Magnetic Linear Dichroism ◽  
Photoelectron Angular Distributions

AbstractWe present measurements of the evolution with film thickness of the 3d electronic states at the Fermi energy of ultrathin Ni films. The morphology and thickness of the films is determined from x-ray photoelectron spectroscopy. x-ray photoelectron diffraction and x-ray magnetic linear dichroism using synchrotron radiation. Photoelectron angular distributions were measured using an ellipsoidal mirror analyzer. Even at submonolayer Ni coverages, the 3d electronic states exhibit bulk-like properties. This is attributed to the short screening length of electrons in metals, the localization of the 3d electrons, the similarity of the Ni and Cu ion cores, and finally the interaction with the underlying fcc periodic potential.

High-Resolution Photoelectron Spectroscopy of the Pyridinide Isomers

2019 ◽  
Author(s):  
Jessalyn DeVine ◽  
Mark C. Babin ◽  
Katherine Blackford ◽  
Daniel Neumark
Keyword(s):  
High Resolution ◽  
Photoelectron Spectroscopy ◽  
Chem Phys ◽  
Photoelectron Spectra ◽  
Velocity Map Imaging ◽  
Neutral Radical ◽  
Dissociation Energies ◽  
Anharmonic Coupling ◽  
First Time ◽  
Photoelectron Angular Distributions

Isomer-specific, high-resolution photoelectron spectra of cryogenically-cooled pyridinide anions obtained using slow photoelectron velocity-map imaging are presented. New vibrational structure in the detachment spectrum of para-pyridinide is resolved, and the spectra of meta- and ortho-pyridinide are reported for the first time. These spectra yield electron affinities of 1.4797(5), 1.4473(5), and 0.8669(7) eV for the para-, meta- and ortho-pyridyl radicals, respectively, as well as a number of vibrational frequencies for each neutral isomer. While most of the resolved structure in all three spectra is readily assigned by comparison to B3LYP/6-311+G* Franck-Condon simulations, the para-pyridinide spectrum shows newly-resolved fine structure attributed to anharmonic coupling within the vibrational manifold of the corresponding neutral radical. Isomeric trends in the photoelectron angular distributions are rationalized by approximating the detached anion orbitals as superpositions of s, p, and d-like hydrogenic orbitals, based on an application of Sanov’s generalized mixing model [J. Chem. Phys. 141, 124312 (2014)]. The presented experimental and theoretical results are used to address the relative energies of the anion and neutral isomers, as well as the site-specific bond dissociation energies of pyridine.

High-Resolution Photoelectron Spectroscopy of the Pyridinide Isomers

2019 ◽  
Author(s):  
Jessalyn DeVine ◽  
Mark C. Babin ◽  
Katherine Blackford ◽  
Daniel Neumark
Keyword(s):  
High Resolution ◽  
Photoelectron Spectroscopy ◽  
Chem Phys ◽  
Photoelectron Spectra ◽  
Velocity Map Imaging ◽  
Neutral Radical ◽  
Dissociation Energies ◽  
Anharmonic Coupling ◽  
First Time ◽  
Photoelectron Angular Distributions

Isomer-specific, high-resolution photoelectron spectra of cryogenically-cooled pyridinide anions obtained using slow photoelectron velocity-map imaging are presented. New vibrational structure in the detachment spectrum of para-pyridinide is resolved, and the spectra of meta- and ortho-pyridinide are reported for the first time. These spectra yield electron affinities of 1.4797(5), 1.4473(5), and 0.8669(7) eV for the para-, meta- and ortho-pyridyl radicals, respectively, as well as a number of vibrational frequencies for each neutral isomer. While most of the resolved structure in all three spectra is readily assigned by comparison to B3LYP/6-311+G* Franck-Condon simulations, the para-pyridinide spectrum shows newly-resolved fine structure attributed to anharmonic coupling within the vibrational manifold of the corresponding neutral radical. Isomeric trends in the photoelectron angular distributions are rationalized by approximating the detached anion orbitals as superpositions of s, p, and d-like hydrogenic orbitals, based on an application of Sanov’s generalized mixing model [J. Chem. Phys. 141, 124312 (2014)]. The presented experimental and theoretical results are used to address the relative energies of the anion and neutral isomers, as well as the site-specific bond dissociation energies of pyridine.

Vibrationally resolved K-shell photoionization cross sections of methane

Open Physics ◽  
2013 ◽  
Vol 11 (9) ◽  
Author(s):  
Etienne Plésiat ◽  
Piero Decleva ◽  
Fernando Martín
Keyword(s):  
Cross Sections ◽  
Density Functional ◽  
Dft Method ◽  
Chem Phys ◽  
Angular Distributions ◽  
Functional Theory ◽  
The Rich ◽  
Photoelectron Angular Distributions ◽  
Molecular Frame ◽  
Good Agreement

AbstractWe use an extension of the static-exchange density functional theory (DFT) method, previously reported in [E. Plésiat et al., Phys. Rev. A 2, 023409 (2012), E. Plésiat, P. Decleva, F. Martín, Phys. Chem. Chem. Phys. 31, 10853 (2012)], to evaluate vibrationally resolved (total and angular) K-shell photoelectron cross sections of methane. The calculated cross sections are in very good agreement with the existing experimental measurements at low photoelectron energies. We show that, in contrast with the rich interference patterns previously observed in molecular frame C(1s) photoelectron angular distributions of methane at both low and high photoelectron energy, no interference effects are observed in the calculated β parameters, even at high photon energies.

scholarly journals Anomaly in photoelectron angular distributions

2007 ◽  
Vol 76 (1) ◽  
Author(s):  
Jingtao Zhang ◽  
L. D. van Woerkom ◽  
Dong-Sheng Guo ◽  
R. R. Freeman
Keyword(s):  
Angular Distributions ◽  
Photoelectron Angular Distributions
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