  The decays ~nu_e -> e- ~X_1^+, ~nu_e* -> e+ ~X_1^-, when kinematically
allowed, constitute a source of 100% polarised charginos. We study the process
e+ e- -> ~nu_e* ~nu_e -> e+ ~X_1^- e- ~X_1^+, with subsequent chargino decays
\~X_1^- -> nu_mu mu- ~X_1^0, X_1^+ -> q qbar' ~X_1^0 or their charge conjugate
\~X_1^- -> qbar q' ~X_1^0, ~X_1^+ -> nu_mu mu+ ~X_1^0. The kinematics of this
process allows the reconstruction of the sneutrino and chargino rest frames,
and thus a clean analysis of the angular distributions of the visible final
state products in these reference systems. Furthermore, a triple product CP
asymmetry can be built in ~X_1^+- hadronic decays, involving the chargino spins
and the momenta of the quark and antiquark. With a good c tagging efficiency,
this CP asymmetry is quite sensitive to the phase of the bino mass term M_1 and
can test CP violation in the neutralino sector.
