Angular and high-frequency analysis of electron interference structures in ∼60 MeVu Kr34+ + H2 collisions

J. A. Tanis, J. Y. Chesnel, B. Sulik, B. Skogvall, P. Sobocinski, A. Cassimi, J. P. Grandin, L. Adoui, D. Hennecart, N. Stolterfoht

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Abstract

Detailed analyses of previous measurements, combined with additional measurements reported here, have been made of electron interference structures observed in 60 MeVu Kr34+ + H2 collisions. Results are used to characterize the angular dependence of the primary interference structures over a wide range of electron ejection angles, particularly backward angles, and, additionally, to search for high-frequency structures as reported recently for 1-5 MeVu H+ + H2 collisions [Hossain, Phys. Rev. A 72, 010701(R) (2005)]. The data for backward ejection angles, in combination with earlier data, permit a detailed comparison with theory over the range 30°-150°, showing that none of the existing theories predict accurately the observed oscillation frequencies for backward angles. Electron spectra for 90° and 150° taken in small energy steps and with improved statistics compared to earlier measurements were examined by means of a Fourier analysis but no evidence of the high-frequency structures reported for H+ + H2 collisions was found.

Original languageEnglish
Article number022707
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume74
Issue number2
DOIs
Publication statusPublished - Aug 11 2006

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Tanis, J. A., Chesnel, J. Y., Sulik, B., Skogvall, B., Sobocinski, P., Cassimi, A., Grandin, J. P., Adoui, L., Hennecart, D., & Stolterfoht, N. (2006). Angular and high-frequency analysis of electron interference structures in ∼60 MeVu Kr34+ + H2 collisions. Physical Review A - Atomic, Molecular, and Optical Physics, 74(2), [022707]. https://doi.org/10.1103/PhysRevA.74.022707