Simultaneous measurement of the average ion-induced electron emission yield and the mean charge for isotachic ions in carbon foils

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Article discussing the simultaneous measurement of the average ion-induced electron emission yield and the mean charge for isotachic ions in carbon foils.

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5 p.

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Arrale, A. M.; Zhao, Z. Y.; Kirchhoff, J. F.; Weathers, Duncan L.; McDaniel, Floyd Del. (Floyd Delbert), 1942- & Matteson, Samuel E. February 1997.

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Article discussing the simultaneous measurement of the average ion-induced electron emission yield and the mean charge for isotachic ions in carbon foils.

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5 p.

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Copyright 1997 American Physical Society. The following article appeared in Physical Review A, 55:2, http://link.aps.org/doi/10.1103/PhysRevA.55.1119

Abstract: Knowledge of the incident ion's atomic number (Z₁) dependence of ion-induced electron emission yields can be the basis for a general understanding of ion-atom interaction phenomena and, in particular, for the design of Z₁-sensitive detectors that could be useful, for example, in the separation of isobars in accelerator mass spectrometry. The Z₁ dependence of ion-induced electron emission yields, y, has been investigating using heavy ions C³⁺, O³⁺, F³⁺, Na³⁺, Al³⁺, Si³⁺, P³⁺, S³⁺, Cl³⁺, K³⁺, Ti³⁺, Cr³⁺, Mn⁴⁺, Fe⁴⁺, Co⁴⁺, Ni⁴⁺, Cu⁴⁺, Ga⁴⁺, As⁵⁺, Br⁵⁺, Ru⁷⁺, Ag⁷⁺, Sn⁷⁺, and I⁸⁺ of identical velocity (v = 2v₀, where v₀ is the Bohr velocity) normally incident on 50 μg/cm² sputter-cleaned carbon foils. Measured yields as a function of Z₁ reveal an oscillatory behavior with pronounced maxima and minima. Contrary to previously reported yields that assumed to monotonically increasing empirical mean charge state for the exiting ion, the present work indicates the Z₁ oscillations in the experimentally measured yields, a fact masked in previous work. The strong Z₁ oscillations can only be observed by simultaneous measurement of the yield and the mean charge state.

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  • Physical Review A, 1997, College Park: American Physical Society, pp. 1119-1123

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  • Publication Title: Physical Review A
  • Volume: 55
  • Issue: 2
  • Page Start: 1119
  • Page End: 1123
  • Peer Reviewed: Yes

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The Scholarly Works Collection is home to materials from the University of North Texas community's research, creative, and scholarly activities and serves as UNT's Open Access Repository. It brings together articles, papers, artwork, music, research data, reports, presentations, and other scholarly and creative products representing the expertise in our university community. Access to some items in this collection may be restricted.

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  • February 1997

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  • Feb. 28, 2013, 7:56 p.m.

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  • May 23, 2014, 3:31 p.m.

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Arrale, A. M.; Zhao, Z. Y.; Kirchhoff, J. F.; Weathers, Duncan L.; McDaniel, Floyd Del. (Floyd Delbert), 1942- & Matteson, Samuel E. Simultaneous measurement of the average ion-induced electron emission yield and the mean charge for isotachic ions in carbon foils, article, February 1997; [College Park, Maryland]. (digital.library.unt.edu/ark:/67531/metadc146596/: accessed May 28, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT College of Arts and Sciences.