Coupling of discrete and continuum electronic states in atom-atom collisions: A coupled-channels investigation of Penning ionization inHe*(1s2s, S3)+ Ar

ABSTRACTThe surface electronic structures of conjugated regio regular and regio random poly (3- hexylthiophene) (rr-P3HT and rra-P3HT) thin films were studied by near edge X-ray absorption fine structure spectroscopy, ultraviolet photoelectron spectroscopy and Penning ionization electron spectroscopy (PIES). The distribution of the surface electronic states was controlled on rr-P3HT and rra-P3HT thin films with different molecular ordering by varying the coating process and PIES was adopted to observe the electronic states existing outside the surface.

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Theory of Dissociative Ionization Processes

Laser Chemistry ◽

10.1155/lc.3.73 ◽

1983 ◽

Vol 3 (1-6) ◽

pp. 73-83 ◽

Cited By ~ 2

Author(s):

S. Kanfer ◽

M. Shapiro

Keyword(s):

Body Wave ◽

Inelastic Collisions ◽

Quantum Mechanical ◽

Penning Ionization ◽

Continuum States ◽

Coupled Channels ◽

Quantum Mechanical Theory ◽

Artificial Channel ◽

Three Body ◽

The Continuum

A quantum mechanical theory for the ℏω+AB→A+B++e- three body breakup is presented. The theory is based on the Continuum Coupled Channels expansion (CCC) in which the three body wave-function is expanded in terms of square integrable and (flux carrying) continuum states. The theory consistently treats the accompanying processes of three body inelastic collisions, dissociative attachment and Penning ionization. Applications to the dissociative photoionization of H2 and HD are presented. The relevant equations are solved exactly using the Artificial Channel method. Excellent agreement is obtained with experiment, concerning the proton kinetic energy distribution.

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Coupled-channels analysis of the (51Σu+,51Πu,53Πu,23Δu) complex of electronic states in rubidium dimer

Journal of Quantitative Spectroscopy and Radiative Transfer ◽

10.1016/j.jqsrt.2018.10.003 ◽

2018 ◽

Vol 221 ◽

pp. 225-232 ◽

Cited By ~ 4

Author(s):

A. Pashov ◽

P. Kowalczyk ◽

A. Grochola ◽

J. Szczepkowski ◽

W. Jastrzebski

Keyword(s):

Electronic States ◽

Coupled Channels

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A coupled channels approach to Penning ionization of Ar BY He*(Is2s, 3S)

Chemical Physics ◽

10.1016/0301-0104(77)85119-7 ◽

1977 ◽

Vol 20 (1) ◽

pp. 121-127 ◽

Cited By ~ 20

Author(s):

John C. Bellum ◽

David A. Micha

Keyword(s):

Penning Ionization ◽

Coupled Channels

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Integration of Core-Edge Spectroscopy Methods for the Study of Polymers

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010016323x ◽

1996 ◽

Vol 54 ◽

pp. 154-155

Author(s):

E. G. Rightor

Keyword(s):

Excited State ◽

Polymer Blends ◽

Gas Phase ◽

Spatial Resolution ◽

High Spatial Resolution ◽

Electronic States ◽

Core Electron ◽

Bulk Solids ◽

Development Application

Core edge spectroscopy methods are versatile tools for investigating a wide variety of materials. They can be used to probe the electronic states of materials in bulk solids, on surfaces, or in the gas phase. This family of methods involves promoting an inner shell (core) electron to an excited state and recording either the primary excitation or secondary decay of the excited state. The techniques are complimentary and have different strengths and limitations for studying challenging aspects of materials. The need to identify components in polymers or polymer blends at high spatial resolution has driven development, application, and integration of results from several of these methods.

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