POSSIBLE 2-ELECTRON EXCITATIONS IN C-3+ FOLLOWING 1 MEV U COLLISIONS WITH ATOMIC TARGETS - Z = 2, 10, 18 AND 36/

Auger electrons emitted from Li-like carbon projectiles excited during 1 MeV/u collisions with atomic targets (Z = 2, 10, 18 and 36) have be en measured. As a function of the target Z, we observe the yields of s ingly and doubly excited autoionizing (AI) configurations of C3+ excit ed during the collision that decay to the {1s2(1S)+e(c)l(c)}2L ground state. The investigation focuses on Auger electrons emitted with energ ies between 220 and 260 eV in the projectile reference frame. In addit ion to the singly excited (1s2s2l)2L AI configurations expected from p rojectile Is electron excitation, doubly excited states to the {1s(2p2 )1D)2D and {1s(2p2)1S}2S are also observed with increasing intensities in going from He to the higher Z targets. If the 2D and the 2S peaks are the result of two-electron excitations, it may be possible to inve stigate this aspect of the collision using some of the recent approach es taken in studying the excitations of the two electrons in He target s.