Double Photoionization of Aligned Molecular Hydrogen

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We present converged, completely ab initio calculations ofthe triple differential cross sections for double photoionization ofaligned H2 molecules for a photon energy of 75.0 eV. The method ofexterior complex scaling, implemented with both the discrete variablerepresentation and B-splines, is used to solve the Schroedinger equationfor a correlated continuum wave function corresponding to a single photonhaving been absorbed by a correlated initial state. Results for a fixedinternuclear distance are compared with recent experiments and show thatintegration over experimental angular and energy resolutions is necessaryto produce good qualitative agreement, but does not eliminate somediscrepancies. Limitations of current experimental resolution are shownto sometimes ... continued below

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Vanroose, Wim; Horner, Daniel A.; Martin, Fernando; Rescigno,Thomas N. & McCurdy, C. William July 21, 2006.

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Description

We present converged, completely ab initio calculations ofthe triple differential cross sections for double photoionization ofaligned H2 molecules for a photon energy of 75.0 eV. The method ofexterior complex scaling, implemented with both the discrete variablerepresentation and B-splines, is used to solve the Schroedinger equationfor a correlated continuum wave function corresponding to a single photonhaving been absorbed by a correlated initial state. Results for a fixedinternuclear distance are compared with recent experiments and show thatintegration over experimental angular and energy resolutions is necessaryto produce good qualitative agreement, but does not eliminate somediscrepancies. Limitations of current experimental resolution are shownto sometimes obscure interesting details of the crosssection.

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  • Journal Name: Physical Review A; Journal Volume: 74; Journal Issue: 5; Related Information: Journal Publication Date: 11/2006

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  • Report No.: LBNL--61191
  • Grant Number: DE-AC02-05CH11231
  • DOI: 10.1103/PhysRevA.74.052702 | External Link
  • Office of Scientific & Technical Information Report Number: 920164
  • Archival Resource Key: ark:/67531/metadc902715

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  • July 21, 2006

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  • Sept. 27, 2016, 1:39 a.m.

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Vanroose, Wim; Horner, Daniel A.; Martin, Fernando; Rescigno,Thomas N. & McCurdy, C. William. Double Photoionization of Aligned Molecular Hydrogen, article, July 21, 2006; United States. (digital.library.unt.edu/ark:/67531/metadc902715/: accessed August 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.