Electron-impact detachment from negative ions

Journal Article · Mon Apr 01 04:00:00 EST 1996 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.53.2371· OSTI ID:279920

Vejby-Christensen, L; Kella, D; Mathur, D; Pedersen, H B; Schmidt, H T; Andersen, L H ^[1]

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1. Institute of Physics and Astronomy, University of Aarhus, DK 8000, Aarhus C (Denmark)

Electron-impact detachment cross sections have been measured from threshold to about 30 eV for D{sup {minus}} and O{sup {minus}}. The purpose was to investigate the cross section near threshold and to reinvestigate earlier claims of resonances due to short-lived states of the doubly charged negative ion. Initial results for D{sup {minus}} showed no resonances [L. H. Andersen, D. Mathur, H. T. Schmidt, and L. Vejby-Christensen, Phys. Rev. Lett. {bold 74}, 892 (1995)]. Here we show that there is no detectable resonance structure for O{sup {minus}} either. The applied experimental technique is discussed in detail. Classical and semiclassical models for the detachment process are presented and compared with the data. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 279920
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 4 Vol. 53; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CROSS SECTIONS
DEUTERIUM IONS
ELECTRON DETACHMENT
ELECTRON-ION COLLISIONS
EV RANGE 10-100
OXYGEN IONS
THRESHOLD ENERGY