Ejected electron spectra from doubly-excited states He (3lnl') produced by
He2+ - Sr and Ba collisions
K.Iemura$B!!(B, S.Ohtani$B!!(B, F.J.Currel$B!!(B, Y.Kanai$B_
(B S.Kitazawa$B%r(B, H.Suzuki$B!!(B,
M.Sekiguchi$B!"(B, J.Takeda*, T.Takayanagi*, K.Wakiya* and T.Watanabe#
$B!!(B Institute for Laser Science, University of Electro-Communications,  Tokyo,
Japan
$B_
(BThe Institute of Physical and Chemical Research (RIKEN),  Saitama,  Japan
$B%r(B Japan Atomic Energy Research Institute (JAERI),  Ibaraki,  Japan
$B!"(B Center for Nuclear Study, University of Tokyo,  Tokyo,  Japan
* Department of Physics, Sophia University,  Tokyo,  Japan
# International Christian University,  Tokyo,  Japan
Ejected electrons from doubly-excited helium atoms, produced by double
electron capture collisions of He2+ with Sr and Ba atoms at low energies,
have been measured using zero-degree electron spectroscopy with high energy
resolution.  Electrons from the configurations of 3lnl' (n$B%&(B3$B!K(Bwere observed.
Electron spectra from the terms of higher angular momenta were dominant in
contrast to the case of photon or electron-impact excitation of neutral He.