How are Smath image ions formed in electron collisions with linear S[DOUBLE BOND]C[DOUBLE BOND]S?

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Abstract

The energetics of Smath image ion formation in electron dissociative ionization of linear CS2 are investigated experimentally with a crossed-beam apparatus. Ab initio self-consistent-field molecular orbital (SCF MO) calculations of potential energy curves for low-lying electronic states of this ion have been made in order to explain how stable Smath image ions are formed, initially at the very large internuclear separation of 3.2 Å.

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