Multiple electron loss cross sections for heavy ions incident on various atomic and molecular gases. [Differential and total cross sections, charge exchange, 20 MeV]

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Differential cross sections for charge change resulting from the scattering of 20 MeV /sup 127/I/sup 5 +/ and 20 MeV /sup 35/Cl/sup 4 +/ ions from thin gaseous targets were measured. Total cross sections for multiple electron loss were determined by integration of the differential charge state yields over angle. Cross sections will be presented for /sup 127/I/sup 5 +/ ions and /sup 35/Cl/sup 4 +/ ions on Xe, Ar, and N/sub 2/. Impact parameter analyses of charge fraction data were performed; these analyses depend on the assumed interatomic potential but not on any absolute measurements. The applicability of Bohr, … continued below

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7 pages

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Miller, P.D. January 1, 1978.

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Differential cross sections for charge change resulting from the scattering of 20 MeV /sup 127/I/sup 5 +/ and 20 MeV /sup 35/Cl/sup 4 +/ ions from thin gaseous targets were measured. Total cross sections for multiple electron loss were determined by integration of the differential charge state yields over angle. Cross sections will be presented for /sup 127/I/sup 5 +/ ions and /sup 35/Cl/sup 4 +/ ions on Xe, Ar, and N/sub 2/. Impact parameter analyses of charge fraction data were performed; these analyses depend on the assumed interatomic potential but not on any absolute measurements. The applicability of Bohr, Thomas--Fermi, and Lenz--Jensen potentials with the experimental total cross sections is shown. A different method, using a magnetic quadrupole to focus individual charge states, was used to measure absolute charge state yields of 20 MeV Fe ions emerging within a large acceptance angle from a differentially pumped gas cell of length 9.4 cm/sup 2/ N/sub 2/, Ar, Kr, Xe, and SF/sub 6/ targets were investigated. From the low pressure yields total cross sections for single and multiple electron loss were obtained using an improved version of the initial growth method. 18 references.

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7 pages

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Dep. NTIS, PC A02/MF A01.

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  • 5. conference on application of small accelerators, Denton, TX, USA, 6 Nov 1978

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  • Report No.: CONF-781113-28
  • Grant Number: W-7405-ENG-26
  • Office of Scientific & Technical Information Report Number: 6376985
  • Archival Resource Key: ark:/67531/metadc1206626

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Office of Scientific & Technical Information Technical Reports

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  • January 1, 1978

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  • July 5, 2018, 11:11 p.m.

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  • May 3, 2019, 6:52 p.m.

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Thumbnail image of item number 1 in: 'Multiple electron loss cross sections for heavy ions incident on various atomic and molecular gases. [Differential and total cross sections, charge exchange, 20 MeV]'.
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Miller, P.D. Multiple electron loss cross sections for heavy ions incident on various atomic and molecular gases. [Differential and total cross sections, charge exchange, 20 MeV], article, January 1, 1978; Tennessee. (https://digital.library.unt.edu/ark:/67531/metadc1206626/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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