Angular distributions of photoelectrons and non-thermal photoions from atoms and molecules. [Review]

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During the last ten years, photoelectron angular distributions have been used extensively to study the dynamics of the photoionization process in atoms and molecules. Some major advances in this body of work are reviewed with special emphasis on results emerging since the last Conference on VUV Radiation Physics three years ago. By far the greatest progress has occurred for atoms, where interest is focussed on improving zero-order (Hartree-Slater, Cooper-Zare) understanding of the asymmetry parameter ..beta..(epsilon), by considering electron correlations, relativistic effects, and anisotropic final-state interactions. The study of the rare gases has benefitted from extensive coordination between experiment and theory, ... continued below

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Pages: 25

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Dehmer, J. L. January 1, 1977.

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During the last ten years, photoelectron angular distributions have been used extensively to study the dynamics of the photoionization process in atoms and molecules. Some major advances in this body of work are reviewed with special emphasis on results emerging since the last Conference on VUV Radiation Physics three years ago. By far the greatest progress has occurred for atoms, where interest is focussed on improving zero-order (Hartree-Slater, Cooper-Zare) understanding of the asymmetry parameter ..beta..(epsilon), by considering electron correlations, relativistic effects, and anisotropic final-state interactions. The study of the rare gases has benefitted from extensive coordination between experiment and theory, whereas work on nonspherical atoms has been mainly theoretical, with the only measurements being performed very recently on atomic oxygen. Angular distribution studies on molecules are in a much earlier stage of development. Progress has been impeded by the lack of practical, realistic theoretical methods and wavelength-dependent measurements, both of which are becoming available only now. This recent work, together with selected topics from earlier resonance-line work on molecules will be reviewed. In addition, a new class of angular-dependent studies of molecules will be discussed--the angular distribution of nonthermal ions formed by dissociative photoionization--which provides information complementary to the related measurements on photoelectrons.

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Pages: 25

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Dep. NTIS, PC A02/MF A01.

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  • 5. international conference on vacuum ultraviolet radiation physics, Montpellier, France, 5 Sep 1977

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  • Report No.: CONF-770935-4
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 5176258
  • Archival Resource Key: ark:/67531/metadc1059659

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  • January 1, 1977

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  • Jan. 22, 2018, 7:23 a.m.

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  • Jan. 29, 2018, 12:48 p.m.

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Dehmer, J. L. Angular distributions of photoelectrons and non-thermal photoions from atoms and molecules. [Review], article, January 1, 1977; Illinois. (digital.library.unt.edu/ark:/67531/metadc1059659/: accessed November 12, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.