  We study the abundances of the elements He through Pb in Fe-rich impulsive
solar energetic-particle (SEP) events with measurable abundances of ions with
atomic number Z>2 observed on the Wind spacecraft, and their relationship with
coronal mass ejections (CMEs) observed by the Large Angle and Spectrometric
Coronagraph (LASCO) onboard the Solar and Heliospheric Observatory (SOHO). On
average the element abundances in these events are similar to coronal
abundances at low Z but, for heavier elements, enhancements rise as a power law
in the mass-to-charge ratio A/Q of the ions (at coronal temperatures of 2.5-3
MK) to a factor of 3 at Ne, 9 at Fe, and 900 for 75<Z<83. Energy dependences of
abundances are minimal in the 2-15 MeV/amu range. The 111 of these Fe-rich
impulsive SEP events we found, between November 1994 and August 2013 using the
Wind spacecraft, have a 69% association rate with CMEs. The CMEs are narrow
with a median width of 75 deg, are characteristically from western longitudes
on the Sun, and have a median speed of ~600 km/s. Nearly all SEP onsets occur
within 1.5-5 h of the CME onset. The faster (>700 km/s), wider CMEs in our
sample are related to SEPs with coronal abundances indicating hot coronal
plasma with fully ionized He, C, N and O and moderate enhancements of heavier
elements, relative to He, but slower (<700 km/s), narrower CMEs emerge from
cooler plasma where higher SEP mass-to-charge ratios, A/Q, yield much greater
abundance enhancements, even for C/He and O/He. Apparently, the open
magnetic-reconnection region where the impulsive SEPs are accelerated also
provides the energy to drive out CME plasma, accounting for a strong, probably
universal, impulsive SEP-CME association.
