  The twisted local magnetic field at the front or rear regions of the magnetic
clouds (MCs) associated with interplanetary coronal mass ejections (ICMEs) is
often nearly opposite to the direction of the ambient interplanetary magnetic
field (IMF). There is also observational evidence for magnetic reconnection
(MR) outflows occurring within the boundary layers of MCs. In this paper a MR
event located at the western flank of the MC occurring on 2000-10-03 is studied
in detail. Both the large-scale geometry of the helical MC and the MR outflow
structure are scrutinized in a detailed multi-point study. The ICME sheath is
of hybrid propagation-expansion type. Here the freshly reconnected open field
lines are expected to slip slowly over the MC resulting in plasma mixing at the
same time. As for MR, the current sheet geometry and the vertical motion of the
outflow channel between ACE-Geotail-WIND spacecraft was carefully studied and
tested. The main findings on MR include: (1) First-time observation of
non-Petschek-type slow-shock-like discontinuities in the inflow regions; (2)
Observation of turbulent Hall magnetic field associated with a Lorentz force
deflected electron jet; (3) Acceleration of protons by reconnection electric
field and their back-scatter from the slow shock-like discontinuity; (4)
Observation of relativistic electron near the MC inflow boundary/separatrix;
these electron populations can presumably appear as a result of non-adiabatic
acceleration, gradient B drift and via acceleration in the electrostatic
potential well associated with the Hall current system; (5) Observation of
Doppler shifted ion-acoustic and Langmuir waves in the MC inflow region.
