Shifts in electron capture to the continuum at low collision energies: Enhanced role of target postcollision interactions

M.B. Shah, C. McGrath, C. Illescas, B. Pons, A. Riera, H. Luna, Derrick Crothers, Sheelagh O'Rourke, H.B. Gilbody

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

Measurements of electron velocity distributions emitted at 0degrees for collisions of 10- and 20-keV H+ incident ions on H-2 and He show that the electron capture to the continuum cusp formation, which is still possible at these low impact energies, is shifted to lower momenta than its standard position (centered on the projectile velocity), as recently predicted. Classical trajectory Monte Carlo calculations reproduce the observations remarkably well, and indicate that a long-range residual interaction of the electron with the target ion after ionization is responsible for the shifts, which is a general effect that is enhanced at low nuclear velocities.
Original languageEnglish
Pages (from-to)010704
Number of pages1
JournalPhysical Review A
Volume67
Issue number1
Publication statusPublished - Jan 2003

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy(all)

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