Measurement of the Electron Affinities of Indium and Thallium

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The electron affinities of indium and thallium were measured in separate experiments using the laser-photodetachment electron spectroscopy technique. The measurements were performed at the University of Nevada, Reno. Negative ion beams of both indium and thallium were extracted from a cesium-sputter negative ion source, and mass analyzed using a 90{sup o} bending magnet. The negative ion beam of interest was then crossed at 90{sup o} with a photon beam from a cw 25-Watt Ar{sup +} laser. The resulting photoelectrons were energy analyzed with a 160{sup o} spherical-sector spectrometer. The electron affinity of In({sup 2}P{sub 1/2}) was determined to be 0.404 ... continued below

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3 pages

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Thompson, J. S.; Carpenter, D. L.; Covington, A. M.; Williams, W. W.; Kvale, T. J. & Seely, D. G. March 20, 1999.

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The electron affinities of indium and thallium were measured in separate experiments using the laser-photodetachment electron spectroscopy technique. The measurements were performed at the University of Nevada, Reno. Negative ion beams of both indium and thallium were extracted from a cesium-sputter negative ion source, and mass analyzed using a 90{sup o} bending magnet. The negative ion beam of interest was then crossed at 90{sup o} with a photon beam from a cw 25-Watt Ar{sup +} laser. The resulting photoelectrons were energy analyzed with a 160{sup o} spherical-sector spectrometer. The electron affinity of In({sup 2}P{sub 1/2}) was determined to be 0.404 {+-} 0.009 eV and the electron affinity of thallium was determined to be 0.377 {+-} 0.013 eV. The fine-structure splittings in the ground states of the negative ions were also determined. The experimental measurements will be compared to several recent theoretical predictions.

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3 pages

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OSTI as DE00834035

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  • Centennial Meeting of the American Physical Society, Atlanta, GA (US), 03/20/1999--03/26/1999

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  • Report No.: DOE/ER/14530--20
  • Grant Number: FG02-95ER14530
  • Office of Scientific & Technical Information Report Number: 834035
  • Archival Resource Key: ark:/67531/metadc777284

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  • March 20, 1999

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  • Dec. 3, 2015, 9:30 a.m.

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  • Aug. 4, 2016, 7:49 p.m.

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Thompson, J. S.; Carpenter, D. L.; Covington, A. M.; Williams, W. W.; Kvale, T. J. & Seely, D. G. Measurement of the Electron Affinities of Indium and Thallium, article, March 20, 1999; United States. (digital.library.unt.edu/ark:/67531/metadc777284/: accessed August 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.