Technique for the determination of the 1s2s3S metastable fraction in two-electron ion beams

E. P. Benis, M. Zamkov, P. Richard, and T. J. M. Zouros
Phys. Rev. A 65, 064701 – Published 3 June 2002
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Abstract

An experimental technique for the determination of the metastable 1s2s3S fraction f of two-electron ion beams is reported. The method utilizes the electron yields of the 1s2p22D and 1s2s2p4P doubly excited states, produced in collisions of two-electron ion beams with H2 or He targets. The metastable beam fraction f is determined in two successive measurements at the same beam energy but having different metastable fractions. The technique is applied to the case of B3+ ions in collisions with H2 targets. The results are in good agreement with those from our recent paper on similar metastable fraction measurements [M. Zamkov et al., Phys. Rev. A 64, 052702 (2001)]. The method can be safely applied in cases where the two different metastable fractions differ significantly.

  • Received 28 January 2002

DOI:https://doi.org/10.1103/PhysRevA.65.064701

©2002 American Physical Society

Authors & Affiliations

E. P. Benis*, M. Zamkov, and P. Richard

  • James R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506-2604

T. J. M. Zouros

  • Department of Physics, University of Crete, P.O. Box 2208, 71003 Heraklion, Crete, Greece
  • Institute of Electronic Structure and Laser, P.O Box 1527, 71110 Heraklion, Crete, Greece

  • *Email address: benis@phys.ksu.edu

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Vol. 65, Iss. 6 — June 2002

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